I got it the first (and only) time almost exactly 2 weeks after getting the booster about 2 months ago. I had a bad headache that painkillers wouldn't get rid o

I got it the first (and only) time almost exactly 2 weeks after getting the booster about 2 months ago. I had a bad headache that painkillers wouldn't get rid of for 2 days before I got tested. Then I was groggy and out of it for about a week. Luckily, nothing worse.