I’ve had my period for almost a month?!

It’s always irregular... like some years I’ll only have it once. The pain is always horrible. I always joke like it’s all 12 periods put into one so no wonder it hurts but this time it won’t STOP. I set up an appt and the dr dismissed me right away like well you’re 27 that’s young it’s probably nothing. So then I made another appt with an OB this time and we of course had a huge snow storm that day and I was unable to even leave the house... freaking out a bit. :( what’s going on with me?