Hi SilentSativa!
So, first of all, my mom's bipolar.
Second, so am I.
So, yes, definitely talk to your doctor, psychiatrist, OBGYN, etc. As mentioned, bipolar is genetic (obviously). You will have to keep an eye on your kid, especially once they get into their teen years and early adulthood when bipolar really starts kicking in. (some get signs earlier)
Anyways, my mom had 6 kids. She was unmedicated and put us through some really tough times. But, she got help and she is totally stable. It was tough but we loved her through it.
The main point I would like to make is that bipolar is totally treatable and so YES, you should have kids when YOU are ready and your doctor says you are stable, etc, etc.
Hopefully there is a medication that is safe during pregnancy. ASK A PROFESSIONAL. In fact, ask multiple professionals!
Best of luck! I'm very excited for you!