You know I wouldn't get out of sorts about the bipolar diagnosis. Its just one opinion. Look towards friends and family that really know you and ask them if they notice your moods swing drastically. Migraines are a life long struggle. My friend has them and she really suffers badly when they happen for even a few days, where she's vomiting and can't function!! Ofcourse you take advantage of that precious time. Self image can really envelope our livelihoods. Don't let it stop you from enjoying life. Have you considered changing your diet or starting to include some exercise in your routine? I knew a woman who was over 400 lbs who literally shed all the weight by going on these long walks everyday. Long walks can be mentally cleansing and a way to meditate. May be you can include these on you weekly routine. Also changing your diet might give you a key into reducing those migraines. Stay away from coffee, chocolate, and msg.
you don't sound bi polar as much as practical. you have to cram a lot into your good days. i would get a second opinion.
You could ask your psychiatrist more about this but often an anti-depressent will worsen the symptoms of bipolar. A good mood stabilizer will treat both mania and depression. There are some websites linked up such as "Depression Central" (for all mood disorders) for informational purposes that you could discuss afterwards with your psychiatarist.