Should I be treated by a cardiologist for POTS

Hi, I was diagnosed with POTS in 2000, in the past two years I have become worse with attacks seated resulting in semi consciousness for up to an hour, loss of vision, numbness of limbs and severe fatigue.
Since my diagnosis I have been treated by a general consultant, I am concerned that I should be treated by a cardiologist and would like a second opinion.
I would appreciate some advice in this matter; do you feel that I should be referred to a cardiologist? My consultant had prescribed me Ivabradine which had severe side effects relating to my vision; I am now on fludrocortizone which is not controlling my condition. Thank you for your time
Regards
Sammi

[Mom2four85]

Have you tried posting in the expert or community forum for the Dysautonomia (Autonomic Dysfunction) section on this?  I post there also, maybe someone has more info about POTS?