Symptoms only on day 5

I have symptoms primarily at one time: the heaviest day of my period (day 4/5).

On the heaviest day of my period for about 36 hours I will sob hysterically like everyone I ever loved just died. I feel this way for no reason. I can do nothing but hysterically sob. I am not in physical pain. Then I’m better after 36 hours.

Ovulation day does have some oddly placed tearfulness, anxiety, and migraine issues.

I will also get some amount of anxiety the night my period starts but I think that’s “fairly” normal.

What’s not normal is the 36 hour Day 5 period day.

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This doesn’t sound like standard PMDD, but not really PME either.

Any ideas? I feel like evening primrose oil and turmeric have helped somewhat. Hormonal birth controls haven’t really helped.

Maybe it’s prostaglandins? What is physically happening right before / on the heaviest period day?

I have no idea. But the 36 hour hysterically sobbing every month is a pretty big problem.