cramping for two now

So Ive been crnaping for two whole weeks now  and  that doesnt hppen i only cramp when im oN my period, Af is supposed to come in 2 days, my fiance and I have been trying for 4 months and everytime AF comes , hes upset and im emotional cause we feel like something isnt working , but long story short my nipples have become darker and wider as well as a feeling of fullness the lower bottom of my stomach were jut gonna wait and hope  🙏🏾🙏🏾🙏🏾 im 🤰🏾