It’s always best to rule out any physical illness before venturing to far into the land of mental illness for obvious reasons.

When was the last time you have had a full physical with complete labs ?

I’d start right there especially since you are noticing things happening as you cycle each month , it could easily be a hormonal issue, Thyroid can also cause strange behavior.

Not sure if your on a birth control pill but those can cause trouble too if your on the wrong one for you.

Hope you find some answers and are feeling better really soon.