If I showered, my patch was gone, had a bath, it was gone, if I swam in the hotel pool (before embryo transfer) it was gone, if I sweated it was gone, roll over in bed, gone, pulled my pants down for a wee, gone!
I only had a limited supply to last for the first trimester as international prescriptions are a bit tricky, so I ended up stinking AND wearing surgical dressings over the top!
My consultant joked that they were designed for much older women who aren't very active and don't wash very often!
Obviously everyone's skin and lifestyle is different but I know getting patches to stay on is difficult for many, and of course the stakes are a lot higher within the setting of assisted reproduction.
I am really glad different options exist for people and if patches suit you that's great, but I think a lot of people struggle on with transdermal when it is itching, falling off or poorly absorbed because they are needlessly afraid of oral estradiol.