Do you think?

I stopped taking my birth control August 7, 2016...I had my period for 4 days and then it stopped. I'm now at my "fertile week"..do you think I could be ovulating this soon? I bought tests but haven't take one yet, but I do feel very crampy down there. There will be no BD this month because my boyfriend is in another state. But I wasn't sure how fast my body could bounce back.