Are you on a multivitamin @Former-Member ?  It can really help with fatigue and stress if your body chemistry is running low .... which can happen if you’re not sleeping well and are very stressed.

I am hearing you too, and I am worried about you.  Can you speak with your gp and let her know exactly how you are ?

Higs n hugs ...... hang in there Hon.  You are doing an amazing job, but it’s also one of the most tiring stretches of parenting, especially single parenting.