If you find blood while passing urine, you should exclude its presence in the urine. Please get a urine microscopy done. Also, you can conceive from unprotected intercourse
only if it happens around the fertile period. Since you did not say when you had your last period and if you are regular with your cycles, it is difficult to say if you could have conceived. Yet, if you have a doubt, you can get a serum beta-hCG
test if you are not sure when you may expect your period, at least 2 weeks after the unprotected intercourse. Hope I have clarified your doubt. Take care.