Idk what to do

So its the time of the month again where im basically shut myself at my apartment and really dont wanna meet/talking/seeing people. its already been a week and i thought: huh, im feeling better and ready to go outside. But then when things gone south ive got a panic attack and i just rushed back in to my apartment. Its been going on for the past 2-3years.

What should i do.

I really dont want my family to worry. I pushed out my friends because i dont want them to worry bout me(and i basically have no friends since its my fault in the first place). And im not sure if im going to see a therapist or not because i actually never talk about these until just now

Also is it to late to fix this?

Edit/a couple points i wanna share: I'm 20, a senior in college .. and no my campus doesnt provide counselor or therapist.