Miscarriage???

Was told by my doctor I miscarried. Hcg had dropped some and my uterus lining was only thickened on ultrasound (I would’ve been too early anyway). However the top test was taken the day my beta levels dropped and the bottom is two days later…this morning. Dr. Put me on clomid and this was my second cycle. Is it possible I could’ve been pregnant with twins and lost one which caused my Hcg to drop temporarily then go back up. I conceived twins naturally last year and lost them at 10 weeks. I would just imagine they should be getting lighter if I was miscarrying?