Hi Rob
You did absolutely the right thing.
The sooner it gets treatment the better and the hog should make a full recovery. It is also possible the problem is mites or mange or even a combination of these things. All are contagious
It’s a little early for females to be pregnant but not unheard of.
I would recommend that you clean out and burn what is in the hog house, and disinfect it, ideally with F10 disinfectant as this will kill the ringworm spores.
Hope this helps and don’t worry you did the right thing
