So I feel like me and my boyfriend are going to have sex soon. Every time we make out I feel like we get close to going all the way but we always get interrupted ( his phone rings, someone walks in, etc)

I really like him and I want to, but when I was with my ex we used the pull out method. I really didn’t like it because it was too risky and sometimes he wouldn’t pull out soon enough, or I guess he’d forget. ( thank god I didn’t get pregnant) My boyfriend knows that I’m not on birth control and I asked him if he had access to condoms but he said he didn’t. I want to avoid the awkward talk with my mom at all costs but I really need condoms! She won’t let me take the pill because she says I don’t need it. I’m 15 so I can’t drive to the store myself and get any. I also don’t have any older siblings that could for me. What do I do?????