PMSing like Crazy my body hates me

So Since April 28th I’ve had 3 periods... one every 2 weeks instead of 4.... I’ve been PMSing practically non stop for the last month.... I’ve got an appointment set up with my gynecologist for Wednesday... my mom has had both cysts and fibroid tumors... and my oldest sister has had either a cyst or fibroid tumor she had to have removed about 4-5 years ago... so a very distinct possibility it’s one of those... though not much pain thankfully in the last month and a half... the biggest issue has been the PMS... I already have pretty bad pms to begin with... but it feels like I’ve been in an almost constant state of irritation/anger for the last month... any ideas for trying to lessen the pms... before I snap at someone at work and get fired... it’s so bad that someone can just ask how I’m doing and I just want to slit their throat...