In the most severe cases, alcohol withdrawal should be supervised by a medical professional because it’s actually possible to die from it. If you’d gone through full-blown worst-case alcohol withdrawal, you’d probably know it (and high BP would probably not be your most pressing concern). Maybe it’s possible to get a milder case of alcohol withdrawal from a lesser level of alcohol use? That’s pure speculation on my part, I can’t find any source one way or the other as most are devoted to withdrawal from heavy alcohol abuse. If I were in your shoes I’d monitor my BP for the next couple weeks and talk to a doctor if BP measurements aren’t trending downward over that time.