I agree with the moms who say to hug them while you can. Unless something weird has happened to make you feel uncomfy, then enjoy it. Especially if he has Epilepsy, maybe it is comforting and soothing to him. I don't know much about Epilepsy or if there is a rule against laying and hugging, but if there isn't then look at his side of it as he just needs his mommy. I can't imagine that it is easy for him and please just give him all the comfort he needs. Eventually he will find another woman to snuggle with and then you may wish you had him back. I'm sure most moms feel this way anyhow.
If you just feel uncomfortable and can't get around it, then maybe you need to sit down and have a talk. Be compassionate though. Its tough for everyone to grow up and not need mom anymore.