WTF HAPPENED TO MY LIBIDO

Hey, girls. To start I'm 22 years old, I've been in a relationship with my boy for 3 years now. Now, he has been "cranky" lately because we haven't got sex. Mostly because I don't feel the urge. I just don't want to. If I do it, it hurts when he puts it in. I went to my gynecologist to see what was the problem & somehow there is no problem inside. so, I don't know why it fucking hurts so much. Second thing is, for the past months I've been stressing out for the littlest things & with depression because I take the weight of other peoples shit. I'm very emotional, so I don't know how to deal with them most of the time. I know at that point in wrong because I shouldn't give a fuck. Then again. I just don't want to have sex. I've tried watching porn which helps but I touch myself & is nothing. He is a very attractive men, for the love of god he is 🔥🔥🔥 & obviously I love him, with been through a lot & we take care of each other. He tries to make me, horny & all, but it starts feeling good until I suddenly stop feeling. I'm really sick of this, I was not like this. Ever. I want my sex life back, we used to be so spontaneous & I don't know what to do. 🤦‍♀️🤦‍♀️ Any advice?