just using condoms is fine, right?

Yzet
I've spent a lot of time thinking on birth control and I wanted to get on something before having sex with my s/o. I couldn't wait though and we had sex two days ago. We were careful and he wore a condom. It was my first time. 
That morning I had a chat with my mom about birth control and she's not keen on me going on the pill and is very against me looking into IUDs and such. I have similar thoughts. If I don't have to I'd prefer not to mess with my body. Condoms worked for her and my dad in the past and she recommended that my s/o and I stick to those. When I told my friend though she freaked out, insisted I get the plan B pill and kept saying "they're not 100% effective!" Which of course I know.
My person is the sexually experienced one and he's aware of how determined I am to not have kids, so I trust he knows how to wrap his junk. 
That one comment from my friend is making my mind have doubts and I'm starting to feel a little worried.