Husband lied to marry & now denies to work and take responsibility

I got married this year which was done in totaly keeping me in dark by my husband and his family. He said he just drink only in office party but after marriage it was a daily business along with smoking and chewing tobacco. He appears to b mentaly not fit in case of sexual relations where he wanted to me to act as call girl to whom he visit ofently. He mentaly toutures me to overcome his failures in his job and physical weekness Now when i am pregnand with 5month he is denying to take the responsibility of me and my unborn child stating he cannot work & earn due to mental uneasiness what to do