Period... pregnancy..help!!??

I usually get my period the last week of every month but I can't seem to remember if I had it in May? Clearly it wasn't the ending that month and not to sure if it was the first week of that month as well. It's June now and according to this app I should be 4 days in my period and still nothing 😒. My husband and I been TTC for a year and 5 months. I hope this is the month of a new beginning but not to sure. Still haven't took a pregnancy test. Kind of nervous and scared to see a negative. Is any ladies going through this?