Every person’s experience with PMS and early pregnancy is different, and not everyone will have the same symptoms with either one. That said, there are a few clues that you may be dealing with one over the other. PMS symptoms usually happen in the days leading up to your period, while early pregnancy symptoms start around the time you missed a period or soon after. PMS symptoms also usually get better around the time you start your period. Both PMS and early pregnancy can cause sore breasts but it tends to be more intense and persistent when you’re in early pregnancy. You can even end up having nausea and vomiting in PMS and early pregnancy, although it tends to be more common and severe in early pregnancy. Food cravings can happen with both PMS and early pregnancy, but you’re more likely to experience food aversions in early pregnancy.