question: my period started on 01 April 2010 and lasted 5 days. I had unprotected sex on 10 April 2010 and started feeling sick 3 days afterwards. For the past week, I have been feeling sleepy, very tired, lower abdominal pains, headaches, backache, leg cramps, a non-smelling egg-white like discharge which changed in texture to watery milky, but still not smelly. I thought I was pregnant, so i took a home pregnancy test on the afternoon of 20 April, it came out negative.  I took another one this morning, 21 April, it also came out negative.  Is it possible that i may have tested too soon? or is it possible that i may have contracted an STI? I still feel the pain on my lower abdomen, though it's not as strongly as the first time i felt it.  Please help!