Help!!

Christy

My hubby and I had sex on April 11th & 12th and I ovulated on April 14th. I have been feeling bloated and crampy since then. For the last 3 or 4 days been having these pinching feeling in my lower abdomen. Took a hpt today(not morning) shows a bfn. Is it too early to take a hpt? Anyone had this happen?