the pill

I'm on the pill that you take for 3 weeks and have a week off and I was put on it because I had really irregular and painful period however I still get really painful period and I still come on when I'm taking the pill so I'm thinking of changing onto one that you take full time however I'm worried I won't feel like a proper teenage girl if I don't have a period, I won't be able to join in with period talks or anything. 
My boyfriend mentioned it to me first but I'm worried he'll expect sex a lot more often knowing I don't have a period to stop us. (He isn't persuading me or forcing me to change he just mentioned it to me a while ago and I then asked him If he thinks I should and he said it's completely up to me and he can't expect me to do anything to please him)