I go through phases where I poop so much and then not at all. I know it's time to break out the Colace when the nausea comes on. Also, I've found Ina May knows what she's talking about b/c when I'm constipated I'll do like she suggests for labor and open/relax my mouth which relaxes other things. That seems to help. But I also don't keep trying if nothing seems to be happening. Just drink a crap ton of water, take a colace or singe kind of stool softener, eat an apple or banana, and try again later. Oh and take a walk or some kind of exercise. That helps too!
All great advice except the bit about eating a banana. That is one fruit you should avoid while constipated as it contributes to constipation. Apples, pears, kiwis, etc are really good for it though!
OP sorry you are dealing with this. I'm in the same boat and it just sucks. I've had hemorrhoids since my pregnancy with DD that never went away fully. : I hope you feel better soon!