if your son is severe enough with tacile discomforts than i think that you have really hit on something there. our son never had any difficulty with contact until he was about 2 or 2 and a half and then he did not want to be hugged... of course we thought it was because he always wanted to be on the go

and he does

but he also HATES the sensation of being restrained at all even if whats going on is affection and nothing more it still feels like he doesnt have control over whats going on to him.
there are tons of cues that we now look at and go "oh my god, why didnt we see that!" but i really think that objection to breast is one that you couldnt pick out as a sign at that early age. it makes a ton of sense with what our guys go through and i think you have hit it dead on with the problem with your son. of course that will only give you one more thing to look for if you have anymore children

as it is, with our nearly 3 month old i am always testing his eye contact... the rest of the family thinks i am paranoid but that is how isaac started out. i am considering him borderline NT until proven otherwise

i give him a 50/50 chance of being "normal" that way i wont be disappointed either way. ofcourse there is the problem of our parenting, i am pretty sure that will exclude him from being "normal" anyhow