It appears that your boyfriend may have an upset stomach after consuming a large number of multivitamin tablets that contain iron. Black, icky, tar-like poop and abdominal tenderness are indicative of possibly internal bleeding. The situation could have been aggravated considering he ingested Adderall, skipped meals, and drank alcohol. He must seek immediate medical attention.

Bulging veins around your rear end are basically varicosities, and such blood vessels are called hemorrhoids. This can occur if you strain when having a bowel movement, are overweight, or sit for extended periods. The signs can be pain, itching, or bleeding. To feel better, use over-the-counter creams or sit in warm water (sitz bath) several times a day. More fiber intake can be really beneficial as well.

Discovering a worm in your stool might be due to a parasitic infection. Parasites can enter your body through contaminated food, water, or surfaces. Consult a doctor for diagnosis and treatment, maintain good hygiene, and practice food and water safety. 

A condition you see­m likely to have is appendicitis. Your appe­ndix is inflamed. The symptoms: stabbing agony in your lower tummy, mostly on the­ left, getting worse whe­n you apply hand pressure, bend, walk around, or fle­x your body. If you experience­ these signs, head straight to the­ emergency room, imme­diately. Appendicitis gene­rally needs surgical removal of the­ appendix to stop dangerous complications from arising.

This should not pose a problem when trying to conceive after gallbladder removal. In terms of your menstrual cycle, recovery time is different for all and can take a few weeks to several months. If you want to know more about this, see an obstetrician/gynecologist.