Should I Be Worried About the Headaches I'm Having on Accutane?

I've been on Accutane 6 weeks. I had some headaches in the beginning, but they went away with ibuprofen. My doctor lowered my dose from alternating 40/80 mg to only 40 mg because she said Accutane can increase pressure on the brain. She said if it continues I'll have to stop it for a month or six weeks. I've had a constant headache lately, but it's mild and doesn't affect my daily activities. Is it increased pressure and do I need to stop? My skin is so much better already, I don't want to stop.