on the 4th november i was inseminated using donor sperm. I waited 14 days before testing, the test came back negative and on the 19th november i started my period, i had all signs of pregnancy so thought it was a sure thing i was pregnant, so even though i was on my period i took another test, it was also negative, 5 days ago i started bleeding, not like my periods normally are, but (sorry for tmi) big clots of blood, this has been going on now for 5 days, i just spend 20 minutes on the toilet, (sorry again) coz everytime i wiped there would be more clots, i dont understand whats happening, could i have been pregnant and this a miscarriage???

Optional Information:
Female, Age: 22, United Kingdom