Shower with external frames🚿

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my Doc says that i can have a shower with frames , and most of the docs recommends as its better for pin site wound healing and to keep  it clean , but everytime i have a shower with antibacteral soal , the following day it seems like i have an infection ,and my pin site hurts badly and discharge coms out, but i dont know exactly if that was  an infection or just swelling because of the shower , but it happens every time. ive read online that pin site hurts following couple of days and then it gets use to the shower and then it normalises. but I've never tried constant shower , everytime i had a shower following day it did hurt and had to take an antibiotics as i thought it was an infection , what you guys think about this

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my doc is russian and now days every docs are recommending a shower with frames on , yes normally i do not wet my legs while having a shower