Feeling kind of unwanted.. :/

Me and my boyfriend have been together for 2 1/2 years and i love him to death! But lately I've been feeling a bit unwanted and less desired by him.. Im not sure why :/ we had sex probably 2 times this whole month. Maybe 3. Like for example; when we cuddle, its not really just is two.. But it is? Like the t.v. Is on watching this stupid show i hate, and he's always on his phone and computer and not really any attention towards me? I dont want to sound like the B word, but its kind of the only way to describe it.. Advice please?