No period could this be it!

Jenn • Rainbow baby Chloe 4/22/2021❤️ 👼12.24.17 & 2.28.18👼
Hello ladies, im ttc baby #1 and af was due 5/6 i havent had sore boobs like usual but two days after my period was due my nipples got sore and are still sore today my period is five days late! I tested 5/2 , 5/6, and 5/8 and got all bfn! I feel nauseous occasionally almost like im car sick and ive had light cramps for about a week now... Has this happened to anyone and if so were you pregnant?