You really need to stop being so hard on yourself.  I doubt there is any person here who has not eaten something that contained animal products at one time or another, either accidentally or deliberately.  It doesn't mean you're not a vegetarian or a vegan, it just means you had a slip.  Move on and get back on track.  Don't beat yourself up over it. 

I've been a vegetarian for eleven years and a vegan for about half that.  Six months after becoming a vegetarian, I sat down and ate three beef tacos from Taco Bell before I realized what I was doing.  I knowingly ate chicken after my father died because I was so devastated I couldn't deal with procuring my own veggie food in a small town with a lousy grocery store.  I deliberately ate salmon when I was on my honeymoon in Alaska because I really wanted to know/experience the taste of such a strong culturally-associated food.  Who knows how many times I have accidentally eaten eggs/dairy in breads and such items I have been served at a restaurant?  I am almost certain I ate beef once in a 'marinara' sauce that seemed to have an odd taste to it.  I can't count how many times I have had a vegetarian soup at an ethnic restaurant only to find out later it was fish/chicken broth.  The point is, do the best you can. 

As for feeling sick, it could be real or psychological.  Your body produces enzymes to break down the foods you eat, if you stop eating certain foods, your body quits making those enzymes.  I know that your body will quit producing lactase to break down milk proteins, but I don't know how long it takes.  If you have no lactase left in your body, you might feel sick when you eat dairy.  As for eggs, I really don't know if those enzymes are different from other ones that break down proteins.  If you feel sick and gross after two weeks, it may be psychological, if it's after two months, it was probably something you ate.  Either way, you will feel  better when you get some good vegan food in you.

1) Joining the confessional: I've nommed down half a bag of crisps before I realised they were yoghurt and chive flavour; the Christmas after I went vegan, I ate pretty much a whole batch of kheer just because I felt awkward and didn't know how to deal with no longer eating a food I really liked. It's all part of the learning experience. You screw up, you feel bad, you end up strengthening your convictions because you know for sure that the grass really isn't greener on the other side.
2) The feeling sick is almost certainly psychological. That doesn't mean it's not real. Take some deep breaths, drink some tea, chill and take it easy until your stomach settles. It'll all work out... what's past is past, and there's no use dwelling on it. Just use it to get back up and keep on keeping on.

tweety, the thai tea got me too. it pisses me off sooooooooooooo bad when i accidentally eat dairy or something non vegan. each time i get closer and closer to just boycotting food from anywhere unless i've made it myself or it's from a vegan restaurant.

I've even asked about thai tea before, and one place said they used coconut milk (it's possinle...). I order it, and I see the server pouring half & half in it. Uh, I don't think they make "half and half" coconut milk.

You have to give yourself a break!  It was an honest mistake, and as long as you are committed, you are still a vegan!  It was a slip up, and you just have to be a little more careful next time.  ALL of us have done it a time or two...or three.

I personally do believe you could have been sick.  I had a similar experience.  I had been vegan for almost a year at the point, and was working very early shifts.  My mom stopped by my work one morning to bring me some coffee, and she had put the wrong creamer in my coffee (dairy cream instead of soy) and I got quite ill.  I know it wasn't psychological because I didn't find out until after the fact that my creamer was switched.

I've only recently gotten an interest in english muffins.  It's really hard to find vegan ones at a regular grocery store.  Most have milk, eggs, or honey.  Also be aware of vit D3.  I bought some Nature's Own brand...even after reading the label.  When I got home, I noticed the D3 (lanolin).  I did find a store brand that was vegan a couple weeks ago, but they had high fructose corn syrup..which I don't buy.  So, I guess I'll either be shellin' out the cash for the ones at the hfs or making my own. 

On that note, maiagoesvegan, stay with it.  Going vegan is a transition.  Every little bit helps.  Don't beat yourself up!

Hm. I guess I'm lucky.  My local grocery store has vegan whole wheat english muffins...the regular white ones are not, but the healthier whole wheat are  :)>>>

I know a blog I read had an awesome recipe for english muffins...I believe maybe A Veg*n For Dinner...I have her cookbook, I'll see if I can find it again.

the recipe in Vegan Brunch is pretty fantabulous.

ughh i'm such a lazy ass and don't you need to buy those english muffin baking rings so they cook properly? on a scale from 1 to 5 how easy is it to make english muffins? i checked out the bagel recipes on this site and they seem insane with all the boiling... i'm too scared to even try

The boiling is super easy, I promise. It just dirties another pan. You make your dough, let it rise, punch down, shape into bagels, rise, boil them a couple of minutes, I let them drain a little, then bake. You should try it, you'll be surprised how easy it is! It's really worth it.