My son has eye creases but since birth (he is 8 weeks now) his one eye is constantly slightly swollen than the other. That's why his eye crease comes and goes on that one eye. He got a really thick double eyelid on one and the other is single eyelid. Should I be worried or will this go away? Sorry this might sound trivial but I'm kind of concerned why at 8 weeks his eyelid is still swollen.