Swallow vs spit during bj

I’ve given a few blowjobs but always turned it into a handjob before he cums, until yesterday he came in my mouth because I didn’t hear when he told me he was about to cum. I was surprised so I spit it out awkwardly and suddenly and then he felt bad and I felt bad idk it was just weird. I’ll swallow next time to make it easier and not awkward, BUT I just need to know if swallowing cum can have any weird things happen like health wise. I know it sounds stupid but I wanna make sure before I swallow it. Thanks!