What can you do if you have a tiny penis and have problems going to the bathroom?

Sit Down? It would need to be evaluated to see if your penis only appears small, is actually small but within normal range, or is a true micro penis. Sometimes reconstructive surgery can help some of the issues, but it can also create new problems. See your doctor, and if truely small or a micro penis, get a referral to a urologist that specializes in reconstructive surgery.