I have two boys and a very loving and understanding husband. I didn't really show symptoms until my oldest was about 2, and I was manic and angry, then jump right to depression. When I got really depressed, it was always the thought of my son that would keep me going, like I didn't want to disappoint him, even at his young age. And I felt pretty good and fairly stable while I was pregnant with my second. However, I did have to get back on my medication after he was 2 weeks old and never really got to breastfeed, which was really important to me. But I have two very healthy boys that I love more than anything, including my husband at times. It's amazing how much love you have for your own child/children.
But I do still go through bits of anger mostly, and I know it's affecting my kids. They weren't behaving last night and I made them go to bed early, and my oldest asked my husband if bipolar is contagious...he's almost 9. I hate that I yell and scream so much at them, but they really are a big reason why I live. And when I get really depressed, which isn't too often, my boys will come to where I'm laying and give me hugs and kisses, which makes me feel a little better.
I really think kids are great, and I wish I could have had one or two more. But it was really hard to be off my meds...I got really suicidal a couple days before I found out I was pregnant. I would say you should wait until you are able to be somewhat stable on medications or with therapy to think about kids. It sounds like you are very young and have so many years ahead of you to think about starting a family. If you are not stable, then it isn't a good time to think about having kids. Stress is a trigger for me, so I always try to keep it at a minimum. Like I said, I have a great husband who would do anything for me and helps me out a lot. He picks up on the parenting when I'm unable to.