Ovulation testing. Too close?

Brooke
So AF started on the 14th and ended on the 18th. I started testing ovulation with the first response digital reader on Monday (5th day of my period as instructed) I got no's the first three days as predicted but then I tested this morning and it was a YES. To say the least we did the deed and are hoping to conceive but my question is, can you ovulate that close to your period. I did have cramping yesterday, you know that dull pain in your ovaries that feels kinda weird. But I just want to know if anyone has ever ovulated that close
Thank you in advance!