Try to be positive rainbow......you never know it might actually be processed sooner than the 12 weeks (which i can say now that my husbands application was processed in 9 weeks from Islamabad).
I'm sure you have a strong family network who can support you when you give birth, I know it's not the same as having your husband be here but just bear in mind that he will be here soon inshahallah.
I assume you're too far into your pregnancy to even think about maybe going to pakistan and giving birth.....private healthcare there is better than over here so there's nothing to worry about. Or maybe you can go when the baby arrives instead?
I hope it all turns out for the best