28 years old. 1 child. I'm currently 3 days late for my period. I've used an app for over a year now to track my cycle so this is fairly accurate info. My last period was on time but only lasted a day (usual is 3-4) and was light. I've had pms symptoms all past week (vague nausea, food cravings, breast tenderness, cramps, face breakout) but period didnt show up. Have had extreme fatigue last several days despite slow schedule (on a shutdown from work). Biggest issue with this is that my husband has a vasectomy approx 12 years ago so pregnancy shouldn't be an option. What else should i be looking at as a possibility?