Hi Leah/Newt, if my understanding is correct a therapist has a degree in psychology as do psychiatrists. And if Planned Parenthood uses the same protocol as an endocrinologist would. I don't see the difference. If you have insurance that would cover what your mother suggests I see no roadblocks that would be any different than your present choice. If it means a more supportive role from your mother, it would be worth the change.
Hugs, Jessica