Getting super emotional and depressed on a monthly cycle?

So for the past few months, usually near the beginning of the month, I will have a few days where I am super depressed and emotional. Today is one of those days. It started off with me waking up crying at 2 am for no reason and I was literally sobbing for 2 hours before I was able to fall back asleep. Then I waking up, I felt super depressed. I have not felt this much depression since I started taking an anti-depresant 5 years ago. I hardly ate anything today and I pretty much just layed around. I tried working out for an hour, and even that couldn't make me happy. I am assuming that this is going to happen again next month, and idk what to do cause it is super debilitating. Asides from these few days, I am very happy otherwise. I have been on hrt for 5 months now, I'm hoping maybe prog will help with it once I'm able to get it. I don't know how to manage it until then since my usual coping mechanism isn't working and I also don't know if prog will even solve it in the first place.