9 days late but still neg tests

Hey there. So I'm 9 days late but the tests are still neg. I took the tests at 3, 5 and 6 days late. I went off BC in April and have been spot on with periods and ovulation since then. We BDed twice in my fertile week so it's a possibility. I've been nauseous on and off the last 2 days (and I'm not ever sickly), had mild cramping on and off (like my period is going to come) and breast sensitivity on and off too. I suppose what I'm asking is, have people had this experience too and what was the outcome? My Dr is just telling me to wait but it's driving me crazy haha.