I m 7 weeks pregnant with blood clots in my lungs, diagnosed last year in April. Due to rivaroxaban - the blood thinner I was on it cause me to have extremely heavy vaginal bleeding with clots, this went on until September last year when I took myself off the medication due to this. 2 days ago my dr put me on fragmin, the injection- injected in my thigh, since last night I ve been having extremely heaving vaginal bleeding, with clots, leg pain, back pain and occasional heavy abdominal cramp, is this because of the medication or could I be miscarring