Ectopic

Val
Two days ago I woke up with terrible pain/pressure in my rectum. And horrible horrible cramps I called doctor and got an ultrasound the next day when they told me that I was having an ectopic pregancy. So so upsetting but I'm only 6 weeks so I was able to get the methotrexate injection my hcg was 8000 I get another blood test in 4 days has anyone experienced this?