5 days missed Period

Hey everyone,
I get regular period every 34 to 36 days,
Last period was on the 16th of April and I was expecting my period on the 21st of May.
 I missed 5 days today is 25th May, I had un protected sex on The 15th and 28th to 31st day of my cycle..
Today am on the 40th Day 
Am getting similar to period and ovulation cramps since Friday and white discharge 
However I tested with clear blue digital on the 4th missed period and it stated not pregnant 
Am I pregnant or no?