Have your dr check your iron levels you might be anemic. I had that too and restless legs and my heart would beat fast sometimes and it was my iron levels were really low.
If you are craving ice you might have your doctor check your iron level. That is a very common sign for low iron, especially during pregnancy.
I have this same problem but I caved in lol I don't have the need to eat it like I did with my 1st pregnancy but it's definitely there. If I dnt eat it i start to obsess and my mouth starts to water lol the harder the ice the better for me ....idk why. Plus if I'm feeling sick a nice cup of over frozen ice (what you husband calls it) makes it all better ^_^