I am now 7 days late. I've been taking pregnancy test since the day I missed my period and they're all negative. I talked to my sister who is an ob-gyn nurse and she said they typically like for women to wait until they missed 3 cycles. I don't know what else this could be. I did feel nauseous for like 2 weeks before my period but I don't have any symptoms now except my nipples are just sensitive but not sore and I've been having minor cramping. At this point I just want to either get my period to at least know or hopefully get a positive test. Has this happened to anyone else?