Quoting Landen Wyatt's Mama:" I have spells where my lymph nodes will really hurt, even when im not sick. My sister had Hodgkins Lymphoma when she was 20 years old and i'm just wondering if i could possibly get it?"
of course you can get it. It doesn't mean you will. Lots of things will cause your nodes to swell and be painful. Happens to me every now and again. My dr. said its nothing to worry about. However, If you're really worried about it, you need to go get checked.
Most cancer's run in families. So since your sister had cancer, you are a little more susceptible. Again, it doesn't mean you will.
Just go tell your dr. and get tested. better to be safe than sorry.