Miscarriage

Yesterday was a tough day. I started spotting lightly over the weekend and called my doctor who reassured me it was not a huge problem. It stopped and started for the remainder of the weekend. Yesterday I went to the bathroom and saw some persistent small clots of bright blood and other tissue. Took a pregnancy test to see if it would be fainter but it was bolder than ever. Still no bleeding to see on a pad but every time I wiped it was there. Went to the ER and they saw nothing on the ultrasound. At the earliest I would be 5 weeks 5 days so they should have at least seen a sac. They said I was having a miscarriage and I have to go every day for the next few days to get bloodwork to confirm my hcg is going down. They told me the bleeding and cramping would get worse but almost 24 hours later I'm still only spotting. I'm devastated but trying to stay strong. I just want this nightmare to be over and hate the anxiety of waiting for the heavy bleeding to come. I'm wondering if I should ask for a D&C or let it happen on its own . Anyone ever have something similar happen? What did you decide to do?