When I finally learned to play a B chord (on guitar), I used to suffer from "B-chord finger". I'd have my pointer on the F, and would strain it while reaching up with the other three fingers. Then I couldn't play a B again 'til it healed, when, of course, I'd do it all over again. Not a problem any more, thankfully.

I know some instruction would have helped, as my form probably stinks.

.....Tiger