YES, you have clear grounds of getting an easy Divorce, withdraw your complaint of HMA9 and file a divorce case on the grounds of cruelty, terminating pregnancy without your knowledge and filing a false 498A. Meanwhile also take Anticipatory bail or Stay on arrest (which ever applicable). Yes you can file complaint of Blackmailing and for termination of pregnancy (complaint will be lodged but you may not have better chances in court as it is established that husband's approval may not be necessary for termination of pregnancy).