Am not who he wants

i dont know what todo....I have asked him several times in our almost 5 years relationship not to watch porn it make me very insecure like I'm not enough..

we have sex alot pretty much every day some times multiple times a day... I dont feel like I he should have any reason to watch porn other then I'm not good enough.... witch he of course always says I am good enough and that he wont do it anymore ....(even talked me into letting him have some nudes of me because he said that would help)

we have been TTC for almst 3 years and I was ovulating last week we had sex 3 days in a row multiple times each day (I know not the best way to ttc but thats just what happend)... when I even so much as tried to kiss him the next day he would say something about how sore he was and how he couldn't posible "go again today" .. (I didn't want it anyway I was sore as F***!)... but come to find out he watched porn and beat off that night...

I just dont get it.. I must not be what/who he really wants .. especially for him to do that during my ovulation week when we are supposed to be ttc...

I dont know what to do I'm so tired of going in circles...I'm second guessing everything... maybe we shouldn't even be together let alone ttc a baby..