Proposition that section 494 of IPC is intended for men who commit bigamy seems to be doubtful. The necessary ingredients of section 494 are: (1) having a husband or wife living; (2) marries in any case; (3) in which such marriage is void, and (4) by reason of its taking place during the life of such husband or wife. Bare perusal of Section 494 of IPC does not carve out any exception that it is intended for men only.
The only remedy available for you now is to go for a divorce under the ground of Adultry. And you can also file a case on the person who has married your wife.