Annulment of marriage by force?

my question is to all lawyers who can guide me. i am an south indian where marriage to maternal cousin is a custom. my mother emotionally pressurized me to marry her brothers daughter and threaten that she will commit suicide if i don't do so. i actually loved another cousin of mine from my paternal side and all my family members knew about it and they were against that relation. so they finalised my marriage with my maternal cousin which i never agreed or disagreed due to lot of emotional and family pressure. Due to the suicidal threat of my mother i was forcefully married to her in july 2011. after the marriage i told the bride that i was married to her under pressure . i did'nt consume the marriage and returned back to mumbai alone for my job after 15 days. i have decided not to go back home as it is impossible for me to stay with her and i did inform her about this and now she is threatening suicide to me. so now i wish to go for annulment of my marraige on the grounds of forceful marriage or non consumption of marraige . please help me to find a way out of this and 

1.Within what time period should the annulment be filed from the date of marriage?
2.From which place should I file for it Mumbai or my home town?
3.Whom should I approach for this i.e. which court?
4.How should I prove that I was been forced as I don’t have any proof about the threats given to me as all were verbal?
5.How much time will this annulment procedure take place as I cannot get a long leave from my office? And is my presence necessary throughout the whole procedure?
6.Will annulment be beneficial if taken by mutual consent?

7. And what if the bride doesn’t agree to sign the annulment ?

8. What if I can’t prove the force on me and the court doesn’t give me annulment?