There are two things I thought of while reading this. One is, maybe the tea isn't agreeing with him. You can tolerate something for a very long time and then all of a sudden become allergic to the ingredients. This is just a guess since I am not there.
Also, the fact that he wants you to lie in the bed with him suggests that maybe he is nervous going to bed by himself, and that can actually upset a person's stomach. Could it be that he is afraid of the dark or something happened recently that upset him and it was at night?
Other than that, I think a doctor's visit is in order, good luck and kiss the little guy for us.
Is it possible your son fell and hit his head recently and you didn't see it?
see:
http://www.ehow.com/about_4661108_projectile-vomiting.html
maybe it will be of help to you. I wish I could help more!
thanks he actually projectile vomits he has his tea between 4. and 5 and up to bed by 7-7.30 so has plenty of time to digest his food usually has a bath at 6.30 so is not having that on top of his tea either he has been so much better recently but this started again a week ago cannot pin point it to any changes in routine or anything have talked to the gp and hv till i am blue in the face can give me no answers
When you say he 'is sick' what do you mean?
What he does sounds quite typical for a 2 year old, except maybe for the 'sick' thing.
Perhaps you can try feeding him a bit earlier before bedtime and give him more time to digest, etc..
Maybe it's colic?
Perhaps a talk with his pediatrician is in order.
Good Luck