I agree with Alfee, you might visit the Bipolar forum at NT. There are many kind folks there who suffer and have much information about the topic.

From what I understand, medication and therapy can be very helpful. You might talk with a physician about medication and if you are already on medication, about making a change. See if you can talk with a therapist about how you feel. If you go weekly to the therapist or at least every other week, that would also help you create a plan to work on and help with loneliness as well.

Additionally, you might consider some sort of hobby to participate in while your husband is away at work. Is there something to do that you enjoy? You might double check with your husband that it would not be too costly, etc. and verify the details, but certainly consider something to do that would be fun and pass the time.