julie,
i just want to assure you that there is a light and you will experience it.
it just may take a bit of time.

you might think about calling for an appt with your pcp since he knows you and may be more inclined to really listen to you and guide you. may also have a good referral for a mental health dr.

i don't know anything about lortab but this is a great observation on your part.
it's a good Q to ask your drs. you could try googling it or call your pharmacist.