tranny clunk

[kenkyd]

well last night i got stuck, i called dad to help since his shop was down the street and well, when he tried getting it out, it was slammed in and out of gear from 1st to reverse and just revved to hell. after leaving and coming home, i started it later and a loud clunk came from tranny. shut it off and tried again and same thing, 3 times total. after warming up it didnt do it. once it cooled overnight, starting it again, i very slightly heard the clunk. the first time driving after being parked, reversed and made clunking for about the 50 feet i go in reverse. forward no noise except;

the other thing i hear now is from beginning of first to top of second is a humming sound. could be just snow in wheel wells but sounds like could be from center of car as well. it drives okay and all. no difference in shifting but now im worried.

what should i do?