If you do take an over the counter pain medication, be sure to follow the directions closely. In general, ibuprofen (Advil, Motrin), naproxen sodium (Aleve) or ketoprofen (Orudis KT) are helpful for those suffering from a sports injury that results in pain, swelling, and inflammation. Generic brands work in the same way and must meet the same standards as the brand name equivalent, but cost less. Read and follow the label directions and don't take more than the recommended dose. Also, don't use any OTC drugs for more than 10 days, unless your doctor or pharmacist tells you it's OK to do so.
Treatment of endometriosis can be with medication or surgery.