i hate that feeling as things slide out of control... the anticipation of how bad it can get, the memories, the sense of failure...
remember that it is not always going to be as bad as you imagine, but be sensible and make the best plans that you can to combat it: sleep as much as you can, talk to your pdoc and/or T, take your meds.
talk to your pdoc before you change your meds unless you have previously discussed what to do in this situation.