How effectual are condoms?

My boyfriend and I definitely want to use condoms when we start having sex, but we're also waiting for me to get the contraceptive graft for some extra protection. Are there high chances that we'll still be okay beside just condoms?

Sorry if this sounds dumb, I just want to know everything before we achieve to that stage...
Answers:    it doesn't sound dumb.

there are different sort of condoms but the ones you find moreso all over are 94-99% impressive.

try doubling up on protection (not condoms bc that actually decreses chances of effectiveness.)

by this i stingy use a spermicidal vaginal inserted sort of protection along with a condom and your chances of getting pregnant will be slim to none.

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