Hello donnacrichton.
I have recently switched to the gel and Utrogestan but I'm struggling so may go back to using Evorel 50 mg patch. When using this previously I always put it on my tummy but after a while I had some bleeding. When I moved the patch to my bottom the bleeding stopped immediately, so yes, I believe where you place the patch can make a difference. I don't think you were wrong initially but one lady suggested that the skin cells can become saturated over time so a bit of relocation may help things.
Take care.
K.