can i sue an employer who has not paid me? can i get interest? and can i sue for emotiobal distress?

Yes you can sue an employer who has not paid you.  If you win, the award will normally include interest from the date the money was due.  In most jurisdictions, you cannot collect for emotional distress based upon a breach of contract, and I would be very surprised if Alabama would allow such claims.  However, many states do have statutes dealing specifically with an employer's failure to pay wages, and which may provide for additional awards to the wronged employee(such as punitive damages, attorneys' fees, etc.) beyond just the unpaid amount with interest.