Help! Spotting and no period!

My husband and I have been ttc for six months. Yesterday my period was due, and I had a very small amount of pink spotting. Today I have had a very small amount of brown spotting. Usually my period comes full force and this time it’s not! I also have moderate cramping.

Has this ever happened to anyone?? I’m hoping this could be a symptom of pregnancy... but I’m also not trying to get my hopes up too high!!