Feeling a lot of pain on right side of stomach, with dryish discharge, STD came bk clear from doctor what could the pain be,?

Abdominal pain. There are so many possible causes of abdominal pain that HealthTap is no place to begin. You need to provided a full detailed history (write it down and bring it with you to the doctor), get examined and undergo imaging studies (CT scan, ultrasound, etc.) and perhaps some labs. You should do this ASAP. Best wishes.