Birth control conundrum

Hey all! Sorry for the lengthy post, but i'm looking for some birth control advice, i'll try to keep it short.

So, my SO and I are getting married next June, and the babies and birth control talk came up (we're waiting to have sex till marriage, so it hasnt been pertinent until now). We want to wait at least a year or two before we have kids, but here's the issue. I don't want to alter my hormones in any way, I don't think it's a good idea unless you need to for medical reasons (no judgement, just not for me), and I am also allergic to metal. To my knowledge, this limits us from any birth control other than condoms, or a reversible vasectomy.

I was wondering if this community knew if there were any other options for us, because of course, we would rather not use condoms, and avoid surgery if the option is there. Thanks in advance!