Help would I be safe

If I’m suppose to be starting my period soon, does that mean I already ovulated? My boyfriend wants to have sex without a condom. I haven’t started my period yet but I can feel it that I will be starting soon. If I have sex without a condom, what are the chances? I will also be getting a plan B.

I’m not on birth control anymore because it made me feel like shit. I’ve been off of it since July.