I've been told that people with sickle cell trait can't experience symptoms but I often get painful cramping down the front of my shins, sometimes making it difficult to stand up. It's not a spasm type cramping and happens more often when I've been particularly active. I'm 22 and I've had this all my life and so has my dad who also has the trait. I also work in a very hot kitchen and I seem to feel the heat much more than my other co-workers and often get breathless and the painful legs when its particularly hot. I feel like these could be related to my sickle cell trait. Could these be sickling symptoms?