I'm trying to assess whether what I'm experiencing is from minoxidil. I'm getting a numb scalp, tingling, dizziness, and overall pressure on my head. Bit of a headache. The thing is, it's not directly after an application. It persists many hours after. Is this possible? Are the sides usually shortly after application or can you feel them for days after? If not, I assume it's anxiety. Any other experiences?