I think I may be pregnant should I have stopped taking my meds?!

I think I may be pregnant should I have stopped taking my meds?

I have Bipolar disorder and have been taking 250mg of lithium carbonate once a day. I think I may have gotten pregnant 2 weeks ago and have not taken them since, am I doing the right thing? or should I keep taking them untill I know for sure. The reason I ask is because I know lithium affects the respitory systems of unborn babys and I really want a healthy bub, I just dont know! I dont want not taking my meds to affect my life (job, relationship etc..) if it turns out I'm not pregnant.

2 weeks ago
Oh yeah I'm on 450 mg not 250 my bad!

first of all, since its late night...call the pharmacy. the pharmacist will be able to tell you whether or not those medications will effect the baby. tell them you're not positive whether or not you are pregnant but as a precaution you want to know. if you just stop taking lithium you might/could/already have had sideeffects and withdrawels.
take a preg test. sched an appt with your doctor and get them to possibly change the meds in the case that they will affect the baby