Has anyone had this happen?

can you have a complete miscarriage of one fraternal twin and not the other? My daughter was a twin. Twins run in my family. I'm seriously starting to think I didn't get pregnant with a rainbow baby and that I'm still pregnant from the last time where I thought I miscarried. I don't have an appointment for two weeks and I don't know what to do because I never got to have an ultrasound last time. I feel flutters sometimes like I did when I was around 13 weeks with my daughter. I don't know if I should call my midwife and express my concerns or not or if she will think I'm crazy. :/