What Causes Persistent Headache After Undergoing A Third Medical Abortion Within A Year?

Hi, I am a young woman, and I had the medical abortion(using pills) on monday( April 17, 2023). This abortion is the third. The first was in September last year, and the second was in February. Currently, I have a serious headache. On Thurday(April 21,2023), I took BetaPain tablets but I still have headache. May you tell me the couse of headache abd recommend me the medecine of this headache.