Could The Ringing Sound In Ears Be Due To Tinnitus?

hi my name is rebecca iam 24yrs and iam from india,iam having a problem of ringing noise in my left ear since from one month,ent doctor gave me ginkgo biloba and gamma linolenic acid,alpha lipoic acid tablets, i heard about tinnitus and iam worried maybe iam also having this disease,in 2008 i had tonsil oppretion ,i had accident too on that time my right side of head was injured including my ear ,and my concern is that what if ringing noise cought me in both ear,doctors said right ear is fine.i used too take marijuana since 2yrs and i smoke and some times i take spasmo proxyvon but i quit now,do i have tinnitus?and iam also looking for treatment in chennai.my final exam is near plz help,thank you.