I had the opposite for a good while of TOO much production of
estrogen which acted like a natural
birth control pill, infrequent periods, melisma on the face (lovely), etc. That was a bummer. But definitely, out of nowhere, hormones can get out of whack. My estrogen righted itself without intervention but sometimes there is some needed. When at the doctor to talk about your hormones, talk about your PDD too. Having imbalanced hormones would compound that problem.