Clarification

I had miscarriage almost 6 weeks ago. If I’ve had I’ve only had unprotected sex twice (in 1 day) is there a chance I could be pregnant again? I’m not sure if or when I’ve ovulated as I haven’t had a period yet. I stared feeling sick last night and I’m feeling dizzy and sick this morning. My app says that’s it’s supposed to be my highest ovulation day today so I’m not sure if that’s the reason. I don’t usually feel like this though.

What do you guys think?