Sorry, probably too late.
I take Ibuprofen, which can help a little.
Some say niacin helps a bit, even if it's after. and others have said that niacin followed by another "O" after about an hour helps more.
But everyone's different and i wouldn;t want you to have another "O" and feel even worse. That is something that we might try when there's nothing important to do and when we've already got some expereience with niacin.