Anyone else have these symptoms?

Ra

So I’m 3 weeks and 5 days. I found out today. I was pregnant but suffered a miscarriage October 14th.

This pregnancy, test look bigger feels like I’m gonna get my period, lower back pain and nausea.

We’re anyone’s cramps weird feeling though? Mine feel like a stretching sensation and it’s on my mind heavily. Technically my period would’ve been here on the 15th but got my BFP today. Should I be worried about the stretching feeling cramps?