not getting horny

I haven't had sex in like 6 months and I want it bad bad bad but I'm not actually seeing anyone and the guy I'm talking to lives 30 minutes away. Anyway I've been trying to masterbate every now and then but every time I try to cum I can't. I watch porn and I haven't been getting horny or wet and so I've just been using lube and try to rub my clit to achieve an orgasm but everytime I try I just get hot and sweaty from trying so hard to cum. What do I do and how can I fix this? Help me get some please