He doesn’t want sex?!

Hey guys so needing some advice.... my boyfriend and I live together. We haven’t had sex in over a month. My hormones are racing and I know our relationship is much more then that. He always works so I understand he’s tired. But when we are laying around I give him hints or ask him if we can do stuff. He always has an excuse or will say “tomorrow night we can” but we never do. He’s been having sweats at night, i looked it up and it says his Testosterone levels could be low. I’m guessing this is causing him not to be in the mood as much. He still gets morning woods but never gets an erection while we are kissing. I’m starting to feel like he’s sick or he’s just not attracted to me anymore. Opinions?!