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Hi,
I am 26 yrs and my partner is 23 year. Three days back we had a very brief intercourse (without a condom)during her second day of menstruation cycle. I penetrated twice only for few seconds and there was some blood on my penis(which i later washed with soap). Now we are scared of aquiring any kind of STDs. What is the diagnosis for this and which doctor does it? During that intercourse would my pre-semen fluids on my tip make her pregnant?

thnks
john