bad sex??

I had lost my virginity in January.. I really don't like to consider it my first cause I regret who I did it with so much... anyway it was the worst thing ever... we were at his house with the bedroom door closed.. randomly got up and took my pants off and started eating me out ( did not feel good) then he took his pants off and went at it... I was not even remotely horny.. there was a baby crying in the living room that I could not ignore.. anyway he seem to be injoying it but honestly I did not feel anything at all.. I lied to him and told him it hurt so he was stop... why did I not feel anything... like I can feel a tampon more then I felt him..