I have a concern. Last night I had protected sex around 2:30AM. Afterward i discovered a small amount of blood, which i figured was due to the fact we did not use lubrication. It is now 2:30 in the afternoon the next day and i am still bleeding. The blood is not dripping, howeevr it always shows up on my toilet paper. I am experiencing slight pain/burning similar to a UTI. I am thinking this is due to us not using lube and the friction caused me some irritation but im not sure. Is there something more serious?