Why am I experiencing stomach pain and nausea?

These could be symptoms of gastroesophageal reflux disease (GERD) with nausea and acid regurgitation. It is advisable to visit a gastroenterologist for medical assessment and management.

There's a possibility that could be due to urinary tract infection, kidney stones, gastrointestinal issues, or reproductive system disorders. Consult a gynecologist for evaluation.

As a medical expert, I would recommend you to make a gastroenterologist consult about your anal fissure scar issue. Over-the-counter creams may not work and could cause other problems. A gastroenterologist can prescribe appropriate treatment measures including topical medications or surgery if required.
 

A situation that inflames the colon, ulcerative colitis, can result in symptoms such as abdominal pain, diarrhea, and fatigue. Even though inflammation and stress brought on by UC do not cause directly erectile dysfunction (ED) or low testosterone; they can have an impact on sexual health. The best way forward is to treat UC effectively while also finding ways of reducing stress.

Your symptoms suggest that you may have an abscess. It’s a collection of pus that causes pain, swelling, and heat. The lump or rope you feel might be part of the abscess. You need to see a doctor about this as soon as possible so they can treat it correctly. Abscesses usually have to be cut open by a doctor to let them heal underground. 

UC and SRUS have some things that are the­ same, but they are a bit diffe­rent. UC impacts your big intestine, making it re­d and sore. You may get loose poop, be­lly pain, and blood in your poop. SRUS often causes blee­ding from your rear end, gooey discharge­, and trouble controlling your poop. Meds that reduce­ redness help with UC, while­ SRUS may need food with lots of fiber and poop softe­ners.