Please I need answers ❗️😭😐

period was due the 26th of this month. I spotted that day so I thought my period was here but it never showed. I have took 2 pregnancy tests and they were both negative 👎🏽🤦🏽‍♀️ I’ve only been late one time and it was a day or two due to me having sex around the time i was suppose to come on. Someone told me to wait a week to see. I’m not stressed or anything so it’s pretty weird to me. I stopped tracking this cycle and just let everything flow out .