Should I buy a vibrator…?

My boyfriend and I don’t have sex as much as we use too, we’ve use to go at it everyday but now it’s because 1 every two weeks or once a month..and ever since I started dating him my hormones have gone up and I wanna do it at least twice a week. He has been studying for school and tired…but I just want to please him..he doesn’t even have to do anything… but I’m debating on seeing if he’s okay with me buying a vibrator to help me…I want to have sex so badly and it’s affecting my mood and making me really insecure. Should I do it? and I’m having a hard time with him on that..I’ve been asking if he wants too and he always says not now or later. I feel so ugly and not sexy and he tells me it isn’t me but it feels like it.

We get in to arguments and stuff because I’m trying to explain how I feel about multiple things not just this and he told me straight up, “you don’t make sense” and yes there are times where I don’t because I’m overthinking and I have a lot of things on my mind that want to come out all at once but I try to do my best and it seems like he never wants to really understand me but always talks back and disagrees with me and never understands that I just want love and a lot of affection. It hurts and I cry a-lot.

Sorry this is long, I have a lot on my mind but don’t know how to say it