ive been having irregular bowel movements for about three months and now its getting worse

I can't sh*t anything solid anymore, just dark brown watery liquid I feel a huge painful pressure that sometimes stings in my anus my bottom pelvis bone (undernead the buttocks) and extends to my upper leg. Ive been having just watery liquid stool thats not alot for about two weeks now. my anus also feels swollen and hard (think i have hemorrhoids)?, I'm really scared theres something bad going on down there, and im out of options of what to do anymore, Should i go to the hospital again?

ive already been to the local doctor who insisted i go to the hospital doctor who gave me medicine but to no avail medicines ive tried so far : magnesium hydroxide,enema's the tube ones, macrogol, bisacodyl.