Best BC?

Hi all, I am 24F and going to the gyno tomorrow for the first time. I think it is definitely time to discuss BC as my boyfriend and I are not the safest when it comes to sex. I have PCOS and hypothyroidism (hashimotos) and do not want anything that is going to make me gain weight or break out. I’m super apprehensive to an IUD or anything physically being in my body. Lastly, I do not want anything that is going to kill my sex drive. Any and all recommendations are appreciated. Thanks in advance!