Missed Periods, Pregnancy.

Paige

I’m in need of someone who can give me some advice! Me and my Fiancé have been trying to conceive a baby Since February. My periods are irregular so normally I except them to be 2-3 days late then they start real heavy and slow down. This month (May) they are 5days late. The day before my period I took a Pregnancy Test it was Invalid that morning, then that evening I took one and it was negative. I took one at 11:30 today and it was Negative. I’m so Baffled 😕. My period has never been this late. Any advice on what I should do.?