Way back in the day, before dirt was invented and the dinosuars still stomped the earth, I tracked my monthly cycle and watched the moon cycles on the calendar.
For me, TOM followed the moon like clockwork, as did my moods. I could watch the calendar and tell you with in 12 hours, when my period would start. And that for 2 days before that I would be *****y, cry, whine, complain, have fits, want to sleep late, skip work, etc.
Yeah I know it seems weird, the comfort for me was I knew, and I could warn hubby, thankfully, although he didn't understand, he was understanding.
I did go through a period, late 20's where the family curse of crappy reproductive organs hit, and I had cysts, pain, anxiety attacks and all kinds of totally off the wall hormone weirdness. Who else stands outside, in a tee shirt when it's 20 below zero, and won't come in the house for 20 minutes, because the sweat is running down their back like a spring flood, and you're so hot you want to barf?
In looking back, track your cycle, your food, moods, everything in a journal or blog or whatever works for you and then go back and analyze it.
There is a lot that could be going on, hormones, depression, food allergies, monthly cycles, stress, relationship issues, yada, yada.
Tracking it, and then looking back and looking at what you journaled is important to going forward.
By the by, I don't think you're weird or mental, and you have a legit ?
I wish I'd have found this place 20 years ago, except it did not exist then.