Woohoo! Well done
I had to change the brand I was taking. The first couple of weeks of my pregnancy I just kept bringing them back up. Have you tried taking them at another time of day?
While my nausea was still hounding me (touch wood it won't come back.... HA!) I couldn't take them in the mornings and the evenings started becoming impossible. So I took them in the late afternoon. Just before my evening nausea kicked in.
Seemed to work.