What is wrong with me

I'm so tired all the time. Everyday except for Sundays I get up at 4am to cook breakfast for my husband before he leaves for work.. after he leaves at 5am, I go on a run. I came back from my run at about 6:15am and picked up the house, even mopped floors. Now, I've been doing this same routine everyday for a long time and am usually full of energy. I haven't changed my diet or drinking habits at all. I drink lots of water because I'm a very active person and I eat lots of healthy food because I'm vegan. But the past few days, I feel like I could sleep all day long, everyday. I even got back in bed this morning after everything and fell asleep. Then I woke up at like 9am, then fell asleep shortly after that again and didn't wake up until 10:30am and only woke up then because my sister called me and the sound woke me up. What is wrong with me??? This is so unlike me. Mind you, I'm about to start my period in a few days. I've been cramping for like a week and a half. Been nauseous on and off. Tender breasts and I usually do get a little bit more tired around my period time but not this much. I never take like three or four naps a day.