Hello, I would be happy to help you with your question.
Given the timing of intercourse just before your period (when you are unlikely to be fertile) and the negative pregnancy
tests (when I would expect them to be positive) I do not believe that you are pregnant.
But given your bloating
, cramping, and urinary complaints you might have a bladder infection and this should be checked out at your doctors office.
At the same time, the discharge might just be related to bleeding from the uterus
for other reasons (and often makes its way out as a darkish discharge). This should also be brought to the attention of your doctor. You should be evaluated for infection and you might need an ultrasound
to take a closer look at the uterus.
I hope this helps and good luck!