Anyone ever have 2 day implantation dip!?

Im 7 DPO and yesterday my bbt dipped to 96.9 which is lower than my typical 97.2. Today it went lower to 96.7. I've been nauseas for a few days, exhausted and have an random hot flashes. Could this be implantation even though the dip in temps is 2 days in a row? Been trying for 6 months now and have never had 2 days in a row that low. Anyone experience this before and u were pregnant?