Pregnant and confused

Hi. So at 6 months we started my son on solids and I’ve had my first period a week directly after he started. Then stop. Boom. No more periods, ergo I assume no ovulation. So me and my manz been going to town right? Doing the deed. Near the end of October I end up pregnant and I miscarry November 2nd. Fast forward to last week Jan 20th, I feel off. Beyond off. Tired beyond remedy, moody, crying over small things. I test for the first time since the end of my miscarriage and it’s frickin positive. I breastfeed and haven’t had a period since my miscarriage and I’m so lost at when to determine how far along I am. We’re basing my current state at when it most recently could’ve happened. So I’d be 5w 2d right now. I asked for a dating scan in my small town Dr but they won’t make me an appointment unless I tell them how far along I am bc they have so many COVID regulations and stuff to deal with. Has anyone else been through this before? breastfeeding, no period, but apparently ovulating? I could be 12 weeks, 8 weeks, or 5w & 2d. Who knows but I’m so confused and seeking other people’s experiences with this! Report post if you believe this is the wrong thread to post in thnx x