My bf doesn’t want me to go on birth control

Cydney

My bf and I have been dating for 9months. He’s 27 I’m 21. Before we got together I asked him if he cared if I went on birth control. He said he didn’t. I didn’t go on it but 3-4 months into our relationship I did get it bc I wanted it for my acne and to help regulate my cycle. But before I took them my bf told me he didn’t want me to. I asked him why and he would only say because he didn’t. He wouldn’t give me a reason. And when I would ask for a legit reason he would get upset. So I just dropped it. But recently ive been thinking about getting on them for the same reasons. So I brought it up today and he got upset again when I would ask him why. I just wanted him to explain his reasoning. He said he’s seen bad things with bc, like mood swings. I really think I want to get on bc but I also want to respect what he wants but I want to know why he doesn’t want me to. We are not trying to get pregnant and the only bc we use is the pull out method.