What is this?

According to <a href="https://play.google.com/store/apps/details?id=com.glow.android.eve">Eve</a> my ovulation window was the 14th - 20th. For almost two weeks my boobs have been incredibly sore and sensitive and I have had a weird almost pressure mild cramping feeling. Is it just pms? It seems like that would be way too early for pregnancy symptoms.