What Causes Sore Breast Along With Stomach Cramps?

My breasts are sore and get heavy and little full before my period but I also have cramps a week n advance to say period is on its way. However I have no cramps I m a week late and my breasts feel even fuller heavier and more sore than usual. My boyfriend and I have been trying to have a family but no luck. We don t wanna get our hopes up because in the past we thought I was but then want. Idk if I am or not.I use to be tired all the time from classes and work same day. However i am only working nos and it s not early shift nor that late 4-9 I sleep in every morning yet I feel still super tired and I ve been told I have been looking exhausted my back has been sore idk from work or not. And I am ALWAYS hungry. Even if I snack on or eat a good amount I m still hungry or I get hungry again like half hr or less after that. And I think I may be having cravings it s rare tho so idk. It s not all the time but sometimes I crave salads veggies and then I crave fries with cheese ranch or ketchup. But it s not all the time so idk. Is it possible I could finally be pregnant? We don t want our hopes up again if I m not.