Think what you want to do, and sleep for 8hrs or so then wake up and think if you still wanna do it..
Frankly speaking..3-4 months of work is not worth putting your entire career in risk..trust me it can happen with anybody..happens with us all the time..we do soo much work and in the end it boils donw to how much you bribe the corrupt officers, if the client cant afford it you're months of hardwork down the drain..
There will be a time to revenge your loss..but this is not the time..it happens with everyone..take it in stride and work hard and wait for your moment of glory..
Keep the sentiments aside and think rationally..You could have failed in school and lost a year...this is just 4months..