New camper frozen water lines

I got home from work today and went right out to the camper again because while at work today I thought to myself hey you dummy the city water hook up won't bleed out unless you remove the screen filter and press in on the check valve. So when I got there I did just that and guess what? Out came the antifreeze. Not only that but in my hast this morning I shut the water pump off but never bled the pressure off. Well lucky me again, there was all kinds of pressure at the city water connection before I even turned the pump back on. It appears to have held the pressure all day so like 14 hours. I don't want to jinx myself but it appears it is holding pressure so I am hoping it is not leaking. Now for some reason I still can't get the spray port hose into the quick connect fitting. I don't know if it is still froze or not but it is literally 2" above the city water port so I would almost think if the city water connection wasn't froze that wouldn't be either. So I don't know if being a metal connection it is staying froze or maybe the connection itself isn't right. I guess I will find out tomorrow as it will be 45 degrees here.

I am keeping my fingers crossed. Thanks a lot for all the replies and for just following along with my saga that was caused by my own stupidity. I guess sometimes I just have to learn by beating my head against the wall.