Plan B?

My boyfriend and I usually have sex with a condom but have recently had sex without a condom. It's a lot harder to get in if you aren't lubricated but once you get going it's fine. He pulls out before he cums and he makes sure he pee's before we have sex without a condom, should I maybe take plan B just to be safe? Yesterday he also came In a condom and about 6 hours later we had sex without a condom but he insisted he wiped "himself" off really good, but without soap. Advice?