I am a medical student I had a relationship with a guy three years ago. We once had unprotected sex and I know he is clean but still at times I do have this medical hypochondriac being a medical student that if at all I may be infected. Never had any signs till now. We both r pink n in the healthiest form of ourselves. I did recently have a blood test due to common cold and also a cheat x-ray my CBC was normal too n my lung fields were clear of pneumonia and Tb too despite of living in cold country like Russia. It was normal flu due to seasonal distribution. Please help me with my delusion .and a panic attack. I know deep down I need not worry but exam stress b such stupidity do come in n out now n then between the scenes of my routine life.