I agree with hamster. Trust what your body is telling you.
Also - I love, trust and am sexually attracted to my partner, and sometimes when she touches me I pull away and don't want to be touched. Since I have started tuning more into myself, my body and the idea of 'consent' and what it really means, and the idea that I don't have to be 100% down for whatever all the freaking time, I realize that I don't want to be touched all the time. Whatever your preference is, that's okay too. But yeah...it sounds to me like it's over with your partner.