Period or Miscarriage??

warning: pictures are graphic! For the past two months my husband and I have been trying for a baby again. This month was the first time I actually got pregnancy symptoms. I just knew I was pregnant. I was suppose to start my period 3 days ago but yesterday I started bleeding, and it hasn’t been anything like my normal period. I never get blood clots but I’m having horrible blood clots as well as no appetite, cramps, and feeling super weak. I’ve had a miscarriage before, but i had a D&C and did not have to pass it naturally so I don’t know... I took a pregnancy test and the results were negative.. but I could possibly only be 2 weeks pregnant if I even am.... has anyone had anything similar happen?