Anyone get their BFP before their first period?

Monica🌸
I just had a second miscarriage 2 weeks ago at 7w 4d. 3 days ago I went in for follow up blood work. My levels had dropped from 4000 to 80 in one week. This morning I woke up with some Ewcm and I took a digital ovulation test and a solid smiley came up. Could this be legit? If I counted my mc as a period, today would be CD 11. Anyone have experience with ovulation after mc?! Not getting my hopes up, but why not try!