I got blood blisters on penis head after intercourse. Consulted skin specialist who diagnosed this as fungal infection. Too medicine for about 3 weeks. Penis looked fine. Had intercourse again and blisters came up immediately. I do not have any external exposure . Wife does not have any problem. Second time had intercourse with condom still blisters came. I have blood
sugar but under control. Have hypertension but that too is in control. Pls advise