Repeating of salaah and quraan after finding traces of blood found on underwear

Asalaamu Alaikum. Mufti. I would like to know whether my Fajr Salaah and 1 Juz that I read is counted, or do I need to repeat my salaah as well as the recited Juz which is for my Ramadan Katam? My reason for asking is because after Fajr salaah and reading Quraan I noticed traces of blood droppings in the backside of my underwear when I removed my underwear to have a shower.
Jazakallah