Hi all - question about Seroquel. Has anyone experienced what almost feel like pressure headaches (like you'd get with a sinus infection) when taking Seroquel?

My p-doc started me on Seroquel IR almost a month ago, for a bipolar mixed episode. I am very, very med sensitive, so he's been slowly building up my dose. I went from 100 mg in the evening for two weeks to 200 mg in the evening for about 4 days. I had to back down to 150 mg in the evening due to some side effects, and last week added an additional 50 mg around noon. For the past 10 days, I've been taking 150 mg at night (around 9 PM) and 50 mg around noon. For just the past couple of days, I've gotten a headache around 11 am that lingers for hours, even if I take ibuprofen. It is worse when I stand up or bend over, but still noticeable even when sitting. Could this be a side effect of the Seroquel?

I'll be seeing my pdoc on Monday and will mention it. Just wondering what others experiences were.