I have a very physical job and I hate asking for any kind of help but I also hate not being able to play with my son or pick him up without being in almost tears because my back hips n legs hurt so much in addition to the more fitful sleep. It's not that our bodies are letting us down it's got more important things to work on.
I'm not as far along as you, but I am definitely extremely fatigued. I'm finishing my last semester of university, and I work between classes. At the end of the day, I can hardly keep my eyes open, and I'm finding it really hard to study and write my papers. I'm not even very physically active right now, but mentally I'm finding my limits are closing in. I want to do well this semester and keep my grades up, and I'm frustrated with myself, because it was supposed to be a relatively easy semester.