Possibly pregnant possibly not

Megan

So I had sex on the 13th of may after a positive ovulation kit, due for my period today. Had maybe a quarter size of pink spotting and nothing else today. Feel a little crampy but not like I usually do when I get my period, by now I would usually get it full flow... I took a test a few days ago but it was negative around 4 days before my expected period. What does everyone think?