Too soon?

UPDATE A FEW HOURS LATER...I think that’s a positive!!!! HOLY MOLY!! LOL!

My fiancé and I are only 7 days out from our wedding day! I’m so excited, stressed, happy, etc. I’m also 2 days late starting my period. So should I assume it’s the stress of the wedding delaying it or go buy a test? We haven’t exactly been careful because we aren’t worried about becoming pregnant before the wedding. I was ovulating roughly 18 days ago and we had sex about every other day. I am having some light cramping but I’ve been having that for 3 days now along with slight breast aching/sensitivity. Figured that was PMS.