Pain & blood after sex

So I've been having sex with my SO for 4 years and yet every time we have sex it is pretty painful for me. And when I go to the bathroom afterwards I have some bleeding. I used to have a big sex drive before I started taking the pill but it keeps getting lower the more I'm on it and with the pain during sex I just don't have the desire for sex like I used to. Just FYI I take Paxil for anxiety and depression and beyaz for BC. I'm 21 and the pain is like as if I have no natural lubrication even if I'm very into it. Anyone have any idea why this is or what I can do to stop the pain and bleeding so my sex drive is boosted??