AF due on 5/11 April was first month we tried I'm nervous

Me and my husband decided to try and have a baby last month we followed all the days we we're suppose to too try and have a baby my app says I was suppose to get my period on the 11th of May and still nothing but I'm also stressed and been through a lot this past month so I know when of my AF is delaying or if I should test soon to see if I'm pregnant any advice help I'm a newbie