Having a partner who works away during the week is almost nothing like being a single parent. Sorry but it really irks me when people think that the isolating lonliness of being a single parent with no-one to talk to or share your life with ever (not even every weekend) is the same as having someone on the end of a phone who cares about you and your dc, loves you and is part of your home and family.
Presumably your OH is away because they are financially suporting you all and therefore contributing to ease your stress on financial matters. That's nothing like being a lone parent sorry.
Then there's the stigma we have to endure, the assumptions that we are bad parents, sponging off the state, and our children are from broken homes and delinquent as a result.
Then there's the cold shoulder you get from far to many other mums who seem to think you're after their OH or steer clear because they don't want to catch single-itis from us.
And in reality there aren't many jobs (armed forces being one) where, if something serious happened to you your other half would be able to take family leave and be back to you fairly quickly.
As a single parent, if I am unwell, migrane, upset tummy, flu etc I simply have to get on with it like normal.
I was ill a couple of Christmas' ago and could barely get out of bed. The only reason I did get out of bed was to stick an instant meal in the oven for my ds. The rest of the time he fended for himself mostly.
And when I injured my shoulder abiut 6 years ago I had no support or help from anyone. I had to do everything I usually did, take care of my ds etc while I could barely even dress myself. Only thing I didn't do, (because I wasn't allowed to as the Doc had signed me off), was to go to work, which meant no money coming in as I wasn't entitled to statutory sick pay at the job I had then.
And last year when I was in a car accident I did find that a couple of people I wouldn't have called real friends, just people I knew as their dc are friends with my ds, did help me out. They were fantastic, taking my ds to and from school, scouts etc, getting shopping for me, and the like. One mum even took him to a birthday party so he didn't have to miss out.
I did stay with one of my only two close friends for a few days when I came out of hospital and while I was pretty much unable to walk. But after a week I was back home and doing it all my self. Or not as was the case mostly. You get home shopping delivered, you forget about housework, and you just deal as best you can. You have no other choice after all.
My ds was off on a school trip for a week which helped a lot. If he had been at home, or if I had been kept in hospital (as they wanted me to be) and if I hadn't of been able to come home when I did then my ds would gone to foster parents. Simple as that.
One of my biggest fears is what would happen to him if I died. Because there is no-one to have him. The friend I stayed with is childless and makes no bones of the fact she doesn't want children. And her OH is an alcoholic. So no way I would leave my ds with them.
You at least have your OH and family to call on (even if they are far away from you now, they would be there if they needed to be would they not?)
So how serious of a situation were you imagining? Becasuse the reality is you get on and deal with it. Because you have no choice I'm afraid.