Missed period


I’m 6 days late.I’ve never been 6 days late on my period! I’m cramping and moody! I also wake up every night around the same time and have to pee. That’s what happened when I was pregnant, but I’m still getting Negative test. I’m confused of why I’m late I haven’t been stressed or anything! Please help! ( my husband and I tried pre-seed for the first time may 28th could I of got pregnant after that)