welcome to healthcaremagic,
the symptoms you are having is nausea and dizziness
, these symptoms generally occurs when a new OC pill is started , do not worry it will subside once the body grts adjusted to the medicine.
good appetite is a good symptom for you since you are breast feeding to need to take healthy food and extra calories.
the composition of ginette pills and yasmin pills are different.
ginette has cyproterone
acetate and Ethinyloestradiol
yasmin has Drospirenone
since you are having a high blood pressure
and being treated for the same, it will be better for you to consult your doctor before you change your medicine , because one of the side effects of Ginette is deep vein thrombosis
in high blood pressure patients.