Back on August the 16th and 20th I had unprotected sex with my partner. On the 17th day I started developing cramps, feeling sick, and clear transparent discharge coming from vagina. Here it is today, I’m having headaches, a pulling sensation coming from groin and pelvis, cramps, lower back pain and heartburn that comes and go. At first I thought maybe I was pregnant but, all test have came back negative. I had a light period that would come and go off and on for 9 days. Can you advise?