urgent🚨🚨

I'm 34 weeks today. And this has been happening for quite some time (on and off again)!!! First it will start of as constipation and can't go for a couple of days. And then it gets sooo bad I have MAJOR stool impaction to the point it's causing so much pain in my rectal area and the pain shoots into my vagina. How can I relieve this immediately?!?!?!  I've tried prune juice, coffee, oatmeal, apple juice, and I drink lots of water. I'm in a lot of pain and want this to be done with already. I can't even sit up with out feeling like (tmi) my poop is being shoved up in me and it's taking my breath away😩😢☹️