What does this mean?!

I'm struggling, day by day.

I have this horrible cramp against my rectum and tailbone, not relieved by passing gas or having a BM.. just feels constantly draining as I feel like I should normally be relieved by passing gas but it doesn't seem the case!

Heat doesn't seem to help as much as it used to and Mebeverine doesn't make a difference.
My bowel movements are hardly anything when I go, I don't see how I can't evacuate more when the need to seems so great yet the amount in the toilet bowel is so little!! And the stools are all so narrow and stuff. :(

I've talked to my dr and he thinks Im constipated but have tried Movicol, Lactulose, loads of water, walking around, raisins, tea, anything that could make you go and it hasnt worked!! So is it really the case!?

I feel so uncomfortable and sometimes so nauseas, I'm worried its dangerous to go so little... I feel all this pressure against my bladder causing my IC to be so much worse at this time. I'm struggling, any advice?

I've been told it's not neccessary apparently.. :( my symptoms aren't too severe enough! I've given in a stool sample and will hopedfully have the results this week, and I had my blood rechecked. God knows though.. tbh since it's all in the rectal area I would be happy enough with a sigmoidoscopy to be honest but I doubt the dr will let me!