I really do need some advice here. I feel horrible for even typing this, but I feel like I'm going to explode if I don't talk to somebody. My 14 year boy has Aspergers. He has the need to be touching me almost constantly. If I am resting or sitting, he will come and sit almost on top of my feet and be constantly touching and stroking my legs. If he can reach, he will do the same with my arms and hands. To the point where it stops me doing things because he is in need of almost constant contact with me. I'm exhausted and I'm starting to really resent him doing it. 
I love the boy to pieces and I would move mountains for him, but I just want him to leave me be for even just five minutes a day. I can't say anything to him because very time I have tried, he just doesn't get why he shouldn't do it, thinks I am angry with him and goes into major meltdown. I can't put him through that.
Is it normal for autistic kids to do this? Is there anything I can do about it? Please help if you can. I feel so guilty for feeling this way.