Ttc after MMC

Hi everyone. I'm not sure if this is the right place to ask for advice on an MMC as I'm new to this. Please feel free to correct me if so!

Anyway - in June I got a BFP (albeit a faint one) in a strip test and confirmed the same day with a CB digi. I was 1-2 weeks so I worked out the first day of my last period and it would've made me 4 weeks. A week or so later - I think I was 5+2 I noticed my symptoms had been dropping off so I retested and got a not pregnant on CB digi. I then rushed out to buy a FRER and that was also negative.

I went to the hospital and had it confirmed that I had lost my baby.

Fast forward 12 days - I've had a bleed which ended about 8 days ago and now I'm extremely nauseated and drained and feel exactly how I did when I was pregnant minus the sore boobs. My usual cycle is 21-23 days and I always ovulate quite soon after a bleed. Is it possible for me to be pregnant again already? I've been having loads of EWCM today and felt sick all day long. I figured it could be ovulation and so took an opk which looked negative to me and I'm not sure where I stand now?

Any help would be great and again, if this is in the wrong place, please tell me. And thank you!