Drs have conflicting views..

Whether your onc is any good or not, you've lost confidence in him so no point staying there.  Go get yourself someone else.  While there is a general policy about names on here, if you put your region in to your profile, others may provide some info or PM you.  It does sound strange that the current onc has not recommended any hormone therapy - you don't know whether you'll get side effects or not until you've tried.  AIs (Letrozole, etc) can only be taken post-menopause and you don't say if you've had any tests or indeed, have ovaries.  Pre-menopause, I think only Tamoxifen is the option.