❗️❗️❗️HELP❗️❗️❗️

So, my mother is not apart of my life and all I have is my dad. He is very difficult to talk to when it comes to these sort of things. I am 17 and I am sexually active with my current boyfriend. My Dad thinks that I am a saint and that I would never ever have sex (considering I've been going to Catholic schools my whole life).My boyfriend and I do not use condoms because they cause lots of irritation for me.  I've had many pregnancy scares and I've been wanting to get on the pill for a while now. How do I ask my dad about getting on the pill. Please help me!