Should I be worried?

My boyfriend lately has been off and I don’t know why. We haven’t had sex in 2 weeks and he doesn’t have a sex drive like he normally does.

I feel like He doesn’t want sex anymore. Like when I want it because I get turned on just from sucking dick I feel like I almost have to beg for it, and I hate doing that. Like in the beginning, as soon as I would climb into bed with him he’d want it but now I can spend an entire weekend with him and nothing. I’m probably just overthinking it or it could be just since we’ve been together for a year.