I hope he starts feeling better soon, I know it's been a while he's had to deal with it now. Poor baby, he too cute to feel so bad!
I know it may be a strain especially after losing your job, but have you thought any more about having the vet out again to check her? I honestly would if it were me. Even though you can see the foal moving and all, I would worry that there is something going on, like infection possibly (the substantial continuous discharge and still no baby) or some other issue that needs to be dealt with. I'm certainly no expert but it just doesn't seem right. I'm not trying to scare you, you have enough stress already, just mentioning it because I feel like it's worth mentioning.