Late period after early (6w) miscarriage?

Hi all,

I miscarried in late jan/early Feb at almost 6 weeks (I went to the doctor Jan 31 and had beta levels in the 70s and my beta levels were at 0 by feb. 4). I used opk tests and according to them, probably ovulated feb 19 or 20th. We did BD around that time but weren’t really trying per se.

My cycles range from 29-33 days so not entirely predictable anyway. My period was due on March 6 or 7, but still no sign of AF. I took HPTs on 3/7 and 3/10 and it’s a BFN (plus I have no symptoms of pregnancy) so I’m pretty sure I’m not pregnant. Is it normal for cycles to be off after an early loss even if ovulation did occur roughly on schedule?

Thanks <3