Rogaine makes my head hurt especially along scar lines

This is a post-surgery silly thing… but I am late 40’s and had a lot of hair fall out from surgery on one side of my head(the repeated angiograms) but also have female pattern baldness in my family so I’m starting rogaine. I have noticed it makes my head really hurt along the cut lines… I have started and stopped the rogaine several times and it is definitely the rogaine. Anyone else have this?