I’m not sure if you are a boy or girl but the issue you are discussing is much like those that nurses, doctors, occupational and physical therapists have to deal with. Don’t go into a profession if you are squeamish about touching the opposite sex. Imagine how a male gynecologist or a female proctologist must feel!
Many female healthcare workers have had to give males a shower in a hospital and males have had to shower females. Some patients request a person of their own gender. There are many techniques for maintaining modesty. My massage therapist friends learned a technique called “draping” where you help someone maintain their modesty by covering them with a sheet during the massage. Many of these issues are resolved in school, some are discussed at a job interview, some placeswill try to accommodate patients and therapists accordingly by matching up the appropriate staff member with a patient…
It is very important to learn professional boundaries and to know how to behave maturely in a clinical setting. It is also important to learn how to deal with inappropriate people. Many healthcare people have had to deal with an offensive patient, just as patients have had to deal with an offensive healthcare person…hopefully this is a rare occurrence.
Good luck if you take this career choice. Helping people with mobility and injury/illness recovery is a very satisfying career.