Severely constipated please help

Im 36 weeks. I haven’t had a real poop in a couple weeks. Just a rabbit turd here or there.

I’m to the point now I sit on the toilet and keep feeling like I need to but nothing will come out. It’s getting very painful.

I’ve tried prune juice, laxatives I’m allowed to take pregnant, greasy food, etc. I eat tons of fiber in my diet as is so this is just wild for me (I was always a 3 time a day pooper TMI). I also have been supplementing fiber on top of that hoping it would help. IT HASNT.

Anyone have any tips? I’m trying miralax one more time tonight and hoping it works. I really am not trying to put an enema in my butt.