Hi there,
I am brand new here and your post made me want to join.  You mentioned you had an 18month old child.  I definately encourage you to kick this habit, before it kicks you or your child sees too much.  Too be honest, I was lurking, however, I read your post and had to join just to give you some of my history.  I am 30 years old with an 8 year old daughter and 5 year old son.  I have been battling opiate/benzo addiction for over half of my life.  I have torn my body apart, to the point to where I was in the ICU with blood transfustions(nearly died from that one), 6 months later I had a grand mal seizure in front of my husband and two young children; and the icing on my medical health is this past Christmas I had two runs in the hospital with my stomach again.  The last pill I took was on January 6, 2009.  I can't say the beginning was easy, even some days are a struggle, this all began over migraine headaches and went to daily headaches.  I easily convinced myself it was fine because it was all legal, all the while knowing, I was doing something wrong, due to the fact that if the bottle said take two, well four would be better, that quickly led to six, and so on.  In the end, (side note here, I have been married for 9 years, together for 13), my brother-in-law, who I loved dearly died of an overdose of the same medication I was taking.  He left behind my best friend and their 3 beautiful, young, innocent children.  All the while, I was doing the same thing.  My husband didn't know, I hid it well.  I finally couldn't take the walls closing in on me and I told him the truth on January 5, 2009 late in the evening.  Sadly, alot of our friends are recovering addicts, and a very good one took me to a meeting, not AA or NA, different.  Yesterday was my first meeting of this secular.  It was warm and welcoming.
I detoxed under my neurologist and husbands care.  It was never easy.  I had horrible panic attacks(I was convinced I would die), my skin would crawl, my heart would pound, I was the most irritable person ever.  They decided together, I did not need detox, rehab, or any other facility.  It could be managed under both of their care.  It was hard.  I come from a very affluent community and I was stripped of car keys, money, credit/debit cards, you name it, I didn't have it.  My husband dosed my medication to me and I saw my neuro once a week.  I am sure, I had a gone I a different route it just may have not worked for me.
I can't believe what I didn't see in the fog of all of the drugs.  I can't believe I drove my children around like that.  Worst of all, I can't believe I sat at my Brother-in-Law's funeral knowing I was doing the same thing, only more.  By the way, I am 5'3", 118llbs, and he was 6'3"225llbs, in shape.  I go to alot of meetings, all kinds, plus I go to church on Sunday with my good friend who has been sober for 4 years. 
I just hope I caught it in time for my own children.  Please don't sugar coat this.  It is serious, and you have soooooo very much to live for.
Thank you for making me post!  I hope I was helpful in some way, and as they say, one day at a time.  Good luck to you!!!!!!