Eric R. Kelly, 32, a Bellmore attorney who has been practicing consumer protection law for about five years, virtually ended his short career last week when an upstate jury convicted him of engaging in oral sex with a 15 year old babysitter.  He will automatically lose his license after he is sentenced for third degree sodomy on October 29th.  He has no prior criminal record and faces a minimum of probation to a maximum sentence of 1 1/3 to 4 years in prison and he will also be ordered to register as a sex offender.