Oh no! Hope all is ok. You will be fine, just very very very tired.
I was diagnosed with mild/ moderate OCD in my pregnancy (all of a sudden I felt it at 20 weeks no previous history of anything like it), no family support within 2hours of us and the next nearest 5 hours drive.
We did fine and are 5 weeks pregnant with number 2 now.
It will be hazy and a bit chaotic based but very special!! Just try to get loads of rest for a couple of weeks with only small trips out, enjoy family and friends visits and only offer a cuppa and a biscuit.
As long as you have baby's needs met, food in the house (if waitrose is your nearest shop, just go there for a few weeks and wean your self off or online delivery from supermarket), clean dishes and clothes, you're fine. Housework will be fine for a few weeks (obv exclusions apply!)
I got wound up for the first few weeks as I just wanted to do the tidying/ dishes etc immediately and couldn't relax. Next time, I wont worry so much.
Also, I didn't realise how much a new born could cry/ grizzle. I found this very hard and my DH dealt with this much better. I accept that with next child, I will be carrying/holding them and use a sling alot.
I think that I expected too much from a new born and thought we would instantly slip into a routine when in reality, it took 4-6 months.
It will be tough but absolutely amazing.