Thanks for the query.
You didn't mention anything about your menstrual cycle, if you are around the time of menstruation
then the blood clots
you passed could be part of menstrual flow.
One more possibility is urinary tract infection
If you think that there is possibility of pregnancy better to consult gynecologist to undergo general and systemic examination, blood test
for pregnancy and urine microscopy which will possibly find out the cause for your problem.