Does hypnotherapy have any negative risks to it at all?

Yes: Side effects of hypnosis include tiredness, crisis of identity, insomnia, irritability, fears, panic attacks, deficit of attention, distorted sense of self, confusion, sexually abberant behaviors, unexpected trance-like state, delusional thinking, depression, dizziness, syncope, fearfulness, feelings of guilt, histrionic reactions, impaired memory, nausea, obsessions, changes in person.