BFN 13 days late

Kayla

Hi guys I’m 13 days late and test every other day just to see a bfn. My husband and I are not ttc but had a slip up 4 days before I ovulated last month. My cycle is usually 28 days. Its usually very regular so I’m concerned. I’ve been bloated for a week, nauseous every so often, my breast feel the same minus sensitive nipples (they feel like when I was breastfeeding my kiddos). Ive also been getting super dizzy. A TON of cm up until 2 days ago now there is none. I’ve had some cramps here and there. I usually cramp a week before af. I’m at a loss. Should I wait it out or go get blood work?