Mental Madness
I've probably touched upon this issue, but...
Mental illnesses are rougher on the afflicted, because your period throws your already-offbalance hormones even more.
For me, my OCD & hypochondria SUCKS on my period-- I just had a panic attack and some breakdowns, eyy.

Now while there's nothing to FIX this completely, you have a few options.
- Meds. These help regulate the chemical imbalances that causes your mental illness, so when your monthly friend rolls around, things won't suck as much.
- Meditate. This can help calm your brain down! If you guys want, I can go over the meditation strats I use to help calm my rage and all that-- It's not religious either, if that'd be an issue.
- Talk/Vent. Try and get the increased worries/fears/depression/etc. out of your system in a healthy way! Then you're less likely to self-implode or do something regrettable.