Early Pregnancy Symptoms

Summer
Hi Ladies!
Wondering who experienced what during the early stages of pregnancy?
My period was due yesterday (no show so far and typically very regular) but I have been having symptoms that could also be related to my period. Tender/swollen breasts, emotional, dull cramping, very tired (but I am a working mom and wife so that could just be life lol). According to this app I would be 4 weeks. Is it too soon to experience these symptoms if I were pregnant? 
I will be taking a test tomorrow if AF doesn't show - would rather wait a couple of days than have to see another BFN. Hoping you all can share your experience with me 😊
Baby dust to all!