I am kicking heroin. I am on day 5 and took subs only the last two days. Stopped today and felt fine. I was stoked to be done kicking. I met a friend who just got out of rehab an was givin Talwin NX. He told me it would be okay to take so I took two 50mg. Later I found out it is a opiod with naltrexone in it. Because I took it after kicking heroin will it put me back into withdrawals? As if I used heroin? I'm worried cuz I was in the clear and now I feel like I will go back into withdrawals tomorow. Any help?