You are not a whiney baby.
Vent Vent Vent.
You are the type of guy that seems to really love the woman you are with (NICE WORK BTW).

Sounds to me more like depression than anything else. The lack of sleep and unmotivate actions. Talk with the Doc about that side of things as well as just the lack of sleep.

You are a good person but you breaking down wont help the relationship or yourself. You can only give so much of yourself - save some to keep you sane.