low progesterone ttc??

Do any of you have/had low progesterone while ttc? Should I take the natural way (vitamins, supplements, etc) to boost progesterone? Or should I just make an appt and get diagnosed? If i make an appointment do I have to wait until a certain day of my cycle so I can get tests done? What have been your experiences with low progesterone?

I think i might have low progesterone, Basically my periods come on time. It's the same flow every time. Just pretty predictable, you know. Except, theyre just not how they were before I started birth control. On days 1-3 of what I call my period I spot. Not even enough to fill a panty liner at all. But then day 4, is horrible! I get horrible cramps, and I go though maybe a tampon and pad, every 4-5 hours or so with big clots . And it's like that all day. Then day 5 it slows down what i would call a normal flow and then day6 and 7 light flow. The more research I did the more these signs seemed to point to low progesterone. The mood swings, being unable to get pregnant, headaches, blood clots, hair thinning, history of thyroid cancer, arthritis, and osteoporosis on my mom's side of the family, weight gain. I'd hate to self diagnose, but this seems pretty reasonable to me.