Hi Eddison,
Welcome to a great place to find lots of helpful information and support--for you, not for your addicted boyfriend. Please take lots of time to read up on what life with an addict means for those who live with them and love them. It is not pretty, but very eye-opening and almost a relief to realize how many others in the world are dealing with a situation just like yours.
It sounds like you thought that your boyfriend's "getting off the vicoden" was going to work and that things would be okay now. It just isn't that easy and it doesn't work that way. Your boyfriend has an addiction, something that he will now have for the rest of his life. He is finding alternative drugs now to keep himself drugged in his addiction. There is absolutely nothing you can do about this, no confronting, no texting, no telling him "if you don't stop, it's over" type of talk will work. Addicts will do whatever they need to do in order to get their drugs, until THEY decide that they can't live like that anymore.
You CAN do something, but it isn't what you are doing right now, which is keeping all your focus on your boyfriend. You can educate YOURSELF on what a life with this man will really be like, by reading others' posts and the "Stickies" at the top of this page.
You can also decide if raising your child around this type of person is what you really want for him or her. Drug addicts will lie, steal, cheat, abuse, and get continually worse in their addiction until they fall mightily and seek help. It's a very long process, and many just don't make it to that point. How long do you want to live like this? Cause the truth is, it is a lifetime illness that you will be involved with and so will your child.
I'm so glad you found this site. You obviously know that something is not right with your life right now. I suggest you stop trying to figure out what type of drugs those are and start trying to decide if you are willing to spend a lifetime feeling like you do right now. Reading here could change your life, not your boyfriends, but your life is the one thing that YOU have control over. Sending you prayers and best wishes that you love yourself and your child enough to read all you can and not keep your head in the sand about what addicts are truly like.