Relationship Advice

I'm not really looking for advice but rather someone to listen and maybe understand? Almost every time my boyfriend and I have sex he orgasms and then he makes me cum but tonight he didn't and for some reason it really bothers me. He asked me at least 5 times if I was happy and I said yes but I didn't mean it and he believed me. He's currently sleeping and I've cried 3 times. Could it just be my hormones? Or am I just insecure over it? I'm just afraid that, even though I know he loves me, that he doesn't really want me.