Hi Kimber, I am sorry you have suffered what is a very common thing with the bipolar community, cycling. People go through depression and mania phases. At the time they may seem normal because there is a tendency to value the mania phases more than the depressive phases. But as you have seen ending up with massive credit bills is not a good thing.
Before you have bill collectors at the door, have you thought it might be better to disclose and have people help you out of your phase and your financial troubles? Avoiding either issue will not make it better.
Put a credit freeze on your credit rating service so that you cannot make impulse decision without lengthy consideration.
Have your psych doc reevaluate your meds to see if there is a need for something else to get you stable.
Many people here at PC find they can share these feelings and what they are going through with the confidence that people go through similar things and can empathize. So many forums are offered as well as Chatrooms (after you have 5 posts or comments on others posts). Anxiety (including social anxiety) is at 8PM EST Wednesday.
You can also be an active member in other ways like supporting others in their questions, reading articles and posts
http://forums.psychcentral.com that are applicable to your area of concern.
Please feel free to private message me or any of the Community Liaisons by left clicking on the name in blue to the left of their post) for questions or just to share.