Recently I havent been feeling any symptoms of a period except for mood swings and fatigue. I am one day late. My stomach feels gross and it has a weird, warm feeling. I miscalculated my cycle and took a test earlier in the week and it came out negative. I took a tums this morning to feel better, but I still dont know why I feel this way. Also, it hurts to have sex. Usually this isnt the case. Help! Has anyone had similar symptoms right before period?