Why do you feel you are going to get manic on the Wellbutrin? It can cause some anxiety but not usually mania.
Focus more on the positives of the drug working. It will take about 2-3 weeks for the drug to take effect, as do most medications. By then, if you aren't feeling much better, or by week 3, then you will know it is a) not working b) is causing you negative results. In the meantime, the other issues you are embarking on are still a result of leading into the medication trying to work itself out. Give it a chance- and yourself a chance as well.
As for your relationship with your hubby, that is something I can relate to. Back when I had a severe manic episode, my DH needed some coaching to the fact that I had a mental illness. It took me having a mental breakdown- literally, and having us go through intense marital counseling, he then also attended some of my counseling sessions with me, and then later was able to better understand the illness and how 'I worked'. That is my story. Therapy helps some people and I was one of them.
Medication can only do so much, and then you have to learn how to cope by using behavioral mechanisms. That can be taught through therapy. Individual, family, and group.
You are able to see what is going on, and that is a good thing. You have acknowledged the problem- and that is the key. If you weren't aware of it, then there would be a huge issue. Right? He needs to understand that is a positive. Some people aren't aware of what their actions are, and continue to be in denial of what they do, then get angrier and their actions get even worse. That happened to me for a while. I was in denial- and boom; I exploded at my family when I was manic. It does happen. You see it- and that is good!
I hope you are okay tonight. Being alone when a spouse is on business is difficult. When my DH goes away it is hard. Taking pills is another thing- DO NOT DO THAT!! That is dangerous, and makes your spouse feel even worse. You could have harmed yourself terribly. Gosh, you are very fortunate.
You take care of yourself. Wish you well, and that this weekend goes by with good results for you. All positive and with hope.