Positive tests, excited but confused!

I work for a doctors office and for the past few days, I’ve been feeling fatigued and nauseous,so my friend who is a RN at our clinic threw two pregnancy tests on my desk and said take these, I bet you’re pregnant. Well, I know my cycle and knew that couldn’t be possible, but for shits and giggles I took them and bam both blazing positive!! However, my cycle doesn’t correlate with the results!! I’m very regular, and should have technically ovulated about two days ago(I didn’t track this cycle or last) so I’m shocked and shook up, has anyone had this happen before! My cycle is typically 26-28 days!