B 14.25
SB 45.26
MP 83.57
HJ 39.50 (hero)

folds to MP, MP opens 1.75, hero flats B and SB call, no history just sat at the table and don't have/use a HUD sence im on wsop .com

POT 7.13 3c 3h Qc

SB x, MP bets 3.75, hero calls, B jams 12.50, so its hard for him to have a three but this is pretty gross. then the sb fold and MP just calls. so this is were I get confused, I think im suppose to fold here but don't have to be right to often to call.. anyways I call turn comes 7d and mp open shoves, and now im really lost and fold..... whole thing feels gross any ideas?