I Want To Donate Platelets, But I Take Aspirin For

I want to donate platelets, but I take aspirin for blood pressure. I actually have very good blood pressure, but I take it as a prophylactic measure. I stopped taking aspirin some years ago when I was pregnant, and pretty much had a headache for 9 months, and I was wondering what would be the best option for an OTC med to take for the 3 days I would have to abstain in order to donate.