Nervous/pregnant?

Kami • SAHM&W❤️
Hi, I am 18 days late for af. I've taken pts & all are bfn. I've asked friends & they all are different, some are 19 days late before bfp, some are 5 weeks late. I called my dr & she said I need to wait to come in till I'm at least 5 weeks late. My hubby thinks I'm pregnant but idk what to think. I've been bloated, tired, migraines, back aches, cramps, emotional, nauseated, & very sensitive to smells. I'm scared & nervous that something may be wrong with me...any comments will be appreciated. Thanks.