Confused?

Okay so my boyfriend came in me numerous of times on my fertile days...my period was suppose to come like usual (it’s hardly ever late and if it is it’s only by a few days), anyways i’m late by 7 days...a whole week exact. On 5 days late i took a Clear Blue Digital pregnancy test and it said “Not Pregnant” except my period is NEVER late, and i’ve been getting a lot of pregnancy symptoms (Nausea, Heartburn, Constipation, Headaches, sensitive breast)

I’m just not sure what it could be...i’m gonna test again with a different test in a day or so.