What should I do? We want to get pregnant, but I am currently on Serequel (25mg), Epitec (200mg) and welbutrin (XL 150mg)

We are also trying to get pregnant, I stopped drinking Nordette about 2 months ago after I've been on it for 11 years.
Should I Stop drinking all this medication now and should I not use them at all during pregnancy?
I am Bi-polar with rapid cycling, and I use the serequel to sleep with and now I am scared I don't want to harm the baby but I am also scared just to stop using these medication over a period of time.

Please I need advice