Feeling lost ??? 😞

Corena
So I had a miscarriage in October of 2014 and that was my first pregnancy ever . Ever since then my periods haven't been exact every month but both of my apps say I should have started on the 1st I started on the 1st in January and December I had a period alil after Christmas November I didn't have one think because of the miscarriaged happened in October. But I'm late this month my boobs was very sore when I was pregnant but there not right now and my belly isn't cramping or anything I have the worst back aches ever and horrible headachs all the time what do you guys think I should doÂ