Help please!

So I'm 36 weeks and for a while now I've had insane pressure in my vagina as well as horrible pelvic bone/area pain. I've also haf a few instances where it kind feels like baby is trying to punch his way out of my vagina haha that's the best way I can describe it. It's like sudden pain up in my vagina where I'm guessing my cervix is. But today I had that pain, only it was way more intense and super sharp, almost like he was using scissors to stab his way out haha. I'm sorry for the weird descriptions, I just don't know how else to word it!

I did majorly overwork myself today with cleaning and now the pelvic bone/area pain is worse and I'm having really bad period-like pain and it's going into my lower back.

So I was wondering if any of you have experienced something like this? And if so do you know what all of this means? And should I be concerned?

I do have an OB appointment tomorrow so I plan to bring it up to her, but I wanted to see what y'all had to say. Thanks!