Im 29, just had a baby 4 mo ago, think im having ppd, and pmdd, could i become bipolar at this age? ?

Ok so I noticed I have been having a hard time with depression, already being on ad, after this baby. I had a somewhat good pregnancy, besides normal preg emotional problems. But my last two periods I have noticed allsymptoms of depression and anxiety like 2 days prior through 2 or 3 days after really bad, then they ease up through the rest of the month. Except if something like my drinking partner stresses me out, I get anxiety. I am already on an ad for almost seven yeses, which I think has been working pretty well since my environmental issues are not that great all the time. But sometimes I wake up and and start questioning myself right away, am I going to enjoy anything today? Do I feel depressed or anxious? But most days it gets better as day goes by and I try and get out of the house. Have an eight yr old, 4 yr old to entertain. Which is good cause I feel like I wouldn't care about getting out at all. My sleep has been haywire since everyone likes to stay up till 10 or 11 pm and my new baby likes to wake up at 630 am. I get a real bad case of insomnia like 2 days when my period starts. Which my mind just goes non stop with anxious thoughts and I can actually relax my body but not my mind. And then on my period I feel out of it, rundown, depressed, anxious, I can't even think properly, my brain is mush. I don't remember it being this bad but then again I didn't get my period for 9 mo. So I don't want to increase or change my meds if this is situational. But with my moods or energy its weird, I seriously started Googling bipolar cause I felt like I was losing my mind, then I starred obsessing over if I was becoming crazy, and oh boy that gets my anxiety going. I have started seeing a therapist, but he can only see me every two weeks. I'm really thinking its hormonal but I don't remember it being this bad with my other pregnancies. I get no support from spouse except that he does work, he can't handle the new baby, she's been colicky.