Lately I've had an extremely low pulse and BP I'm obese and 26. I'm tired a lot, cold and I have a bit of an arrhythmia any suggestions?

Very puzzling but... I would consider speaking to your primary doctor about testing you for thyroid abnormalities, or referring you to an endocrinologist to examine other hormonal reasons for all of these symptoms, which are somewhat suspicious for one. Please also find out more about your arrhythmia, and make sure you do not need other treatments.
PCP. See your primary care doctor and be checked out. You may need some blood work or an ecg.