I have heard plenty of accounts of bad guides and even one where someone claimed their guide had physically attacked them, imo if this is happening it is not your spirit guide.
IMO They will not abuse you in any way if they are a true guide and if your guide asks you to do something you feel the slightest discomfort about, do not do it.
IMO They will not abuse you in any way if they are a true guide and if your guide asks you to do something you feel the slightest discomfort about, do not do it.