I m male of 34 years old. I have had a single episode sexual relationship with a woman in August 31 2011. I dont know about her status. Iwas sexually healthy and no STD at that time but from next day i felt mild burning pain in the top of my penis and same in urinary tract. So i took Metronidazole Tablet 400 mg for 7 days course (3 tablet in each day), Azithronyein 2 tablet of 500 mg, Cifran 500 mg of 10 tablet for 5 days course and Polybion 250 ml Vitamin B complex syrup. I used the above mentioned tablets without prescription of Doctor. After 10 days of first exposure i felt mild fever, headache and physically weaked including chest and back pain but no symptoms of flu, skin rashes or other symptoms of HIV so far. I m very worried now and want to know about the probability of HIV infection.