Ladies advice please ?

So let me start by saying that my Af is always on time the latest is one day late that's all... Last month my fiancé and I had a lot of sex wouldn't be surprised if I am pregannt soo I suppose to start my Af Monday and as now still now I took a hpt yesterday came back negative took it mid day but I kinda forse my self to pee since I was anxious.. I have no signs of my Af like I always do I was cramping last week and Monday went away I get random pain in my back my nipples are huring when I touch them never guer before I had sex Monday and yesterday thought my Af came since I wa so wet but no I have normal discharge so anyone ever expierence this ? She. Should I test again ? Thankyou !! <3