NuvaRing and coming inside

Hey ladies...I have been on all types of different birth control. I have never let a guy come inside me even while on birth control out of paranoia (not quite ready for kids yet). My boyfriend and I have been using withdrawal for the last year after I had my IUD taken out as it was not a good fit for me. I'm realizing that women on birth control have sex that ends in him coming inside and they don't worry - they fully trust their BC. Now that I'm on the NuvaRing again, do you think I have any reason to be paranoid about him coming inside me? Or should we continue to use withdrawal as a back up? Thanks in advance👍