If the blood showed up in your urine and it was painful to urinate the day after sex it is very unlikely that the sex had much to do with it. If you are certain the blood is urinary, that indicates a urethritis; the bladder does not often become infected. It is most likely that you have had a low level urethritis and the activity simply aggravated it. The distances down there are small.
You need to see a doctor and get on whatever she prescribes. STDs would not show up for a fortnight and if he had done any damage, the blood would be around the introitus of the vagina.
Urethritis is common in both men and women. We see it daily.
Brandye
Posted: 26 Sep 23:52