Discharge smelling different?

Im current 9dpo and yesterday or so I noticed my discharge smells kinda sweet (gross I know sorry) Ive also been cramping on and off since about 6-7dpo and my nips are tender and kinda tingly also feel super lethargic. I’ve been testing and all have been bfn so far, af is supposed to be on the 11th. I know 9dpo is early but has anyone ever noticed themselves smelling different and been pregnant? It’s kinda weird because my cervical mucus is between egg whites and watery/slippery