I think I’m bipolar 😬

Not to an extreme degree but definitely to some level and I know it must be affecting my kids. I have weeks of feeling down, basically going from bed to the rocking chair back to bed, barely able to cook, clean, grocery shop, etc. Followed by a mania type episode which I always thought was obsessive compulsive disorder. I start massive projects, I wash walls, I climb ladders to clean the windows from the outside, etc. I stay up all night doing things, obsessively organizing, anxious. Then back to weeks of not wanting to leave my room. It’s gotten WAY worse in the last few months since having my third child.

How do I talk to my doctor without sounding completely crazy? Is there really even anything I can do about it?