When will I get periods

Michelle

I went to a scan to be told babies heart had stopped. I delivered him at 16 weeks on the 4th off jan. I bleed 4 5 days like a period.... I have been having sex unprotected.. could I fall pregnant again or will I still have hormones left from then? I have been spotting a little bit. I can take a test but not sure if it will still say pregnant and not wanting to get my hopes up if u know what I mean