Depo Shot

On my period for the second time on depo and it’s been 11 days but I am getting my 3rd shot in 4 days finally. I plan on having sex about 4 days after getting the shot because it does end my period very quickly and I am able to do things with my boyfriend again. Anyway, I’m wondering that

If I have sex 4 days later without a condom and he cums in me, will i have a greater chance of pregnancy because I was just on my period or am I safe because of how effective the depo is and it ending my period completely ?