I just bought some fresh lobsters. When I put them in my crisper drawer (I'm not going to be cooking them for another 2 hours or so), I noticed that one had foam all around its head. This same one has a small piece off the end of its claw broken off. Its still alive and moving, but some people told me that if a lobster is dying, it will give off toxins and make you sick. Is this a tall tale? Do you think my lobster is ok?