Confused!

So my husband and I are trying to conceive and we got excited last month as my period was 5 days late!...but then had a negative test and then AF came :(
However total opposite this month as my period came 5 days early! Weird as I'm usually very clock work (track on Glow).
I've heard about 'periods' still happening while pregnant and just feel like it's weird for my body to be so out of sinc and my boobs have been so super sore these last few weeks. But I got a negative test last month and have not tested this month as I had this period.
Has anybody else experienced anything like this and found out they were pregnant?
I just want to get opinions before I get my hopes up and then test to get disappointed by another BFN :(