Thanks for writing.
If you have history of unprotected intercourse
and you do not menstruate in a week's time then you should repeat your urine test for pregnancy
Also as you say you had a spot of blood then it might be that you are likely to menstruate in a day or two.
If you urination is frequent and painful with blood tinge then you need to get a urine routine microscopic examination test done to rule out possibility of urinary infection.
I hope I have answered your query,