I was diagnosed with pmdd a few years ago and only recently with adhd. I’m still waiting to start adhd meds but I have been using Zoely (nomegestrol/estradiol) for pmdd, which has been life changing. My pmdd would last two weeks every month and was sheer hell. I had bad experiences with any hormonal meds in the past prior to pmdd diagnosis and was reluctant to use it as a treatment. My doc explained what caused the symptoms (rising levels of progesterone) and put me on zoely as this is one of the newer pills which mimics natural oestrogen better. Maybe talk to your doc about treating the pmdd with something similar?