Help!!!!!!!

So,last month I started my period like a week early. It was really weird and unexpected and it lasted four days. It also, was very light usually I’m heavy the whole time. This month my period is late. I have been doing the dirty but with protection. When I did something a while back before my early period I did not use protection. I have taken three test all of them have been negative. My body has been feeling really off lately as well. I don’t know if it’s stress which would make since because this month is the 1 year and 2 year anniversary since my parents passing. I’m just not sure.