Amanda-
I have been in your position many times...you may need to see your doctor about increasing your Topamax. Since your body has had time to adjust to it since September it may be time to bump up the dosage. There are also other options that your doctor has when you are in a migraine streak such as this...they can give you a steroid pack to break the migraine cycle....
Definitely talk to your doctor, they don't know what is going on if you don't tell him/her.
Sara