Could there still be a chance I'm pregnant?

For three weeks I was off the pill due to some Doctor issues. My husband and I had sex twice during my ovulation time. I was nervous  I might be pregnant so I took a test a week ago and was negative. I took another test the day my period was suppose to start and that was negative too.  I am now 4 days late on my period. Should I wait a little longer to take a pregnancy test again? Yesterday when I was peeing I wiped and there was a small amount of light pinkish blood but that is all I have had. Also have been cramping quite a lot and have been some what bloated and constipated.