So - I'll be 22 weeks tomorrow. I've been feeling good morning sickness wise for several weeks now - until about 3-4 days ago. I've thrown-up every morning since. Its only in the AM. Its weird though. Why did it come back? I am on new medicine - so maybe thats why? Baby just doesn't like it?? Hmmmm.... one more day and I'll be off of it. Then I guess I'll be able to see if its really MS, or just a side effect of the med. I have taken this medicine before though - and never had this problem.... which is why I think its not really related. Have you gotten MS later in pregnancy again?