First I need to say, I am sorry you're feeling so bad
Second I REALLY need to say, a psychiatrist has NO BUSINESS diagnosing PMDD.
A Gyno or hormone specialist should be the only ones able to diagnose this with proper testing to rule out other causes.
Only a very small % of women have PMDD. It's more than likey caused by something else.
Can you be in peri or menopause?
Don't label yourself until you get a proper diagnosis.
As for your actions, I think feeling bad about something we did is not always a bad thing because the horrible feeling will help in the making of better choices next time.