Missed period


Has anyone missed their period, for negative tests and still end up pregnant? According to my last menstrual cycle I’m 2 days late but according to my ovulation I’m 6 days late. I’ve taken numerous tests all negative. Thrown up the last few days, sore breasts/nipples ewcm, cramping, headaches, peeing more often, more tired and my temp continues to rise. My doctors can’t get me in til next week so I can’t take a blood test yet but was curious if this has happened to others