I'm just soooo tired! Went back to work off mat leave in January. I work shifts but only part time. I have a 4 yo and a 1 yo. I run 3-4 times a week (one long run up to 10 miles). Why am I sooooo exhausted? I'm on my third throat infection in two months and I feel wiped out after every run of 2-3 shifts. If I go to Dr will they check iron/thyroid levels? I literally have no energy to do anything else and feel like I am rubbish at being an adult as lots of people do so much more than me. I eat plenty and drink plenty water.