In dealing with swollen lymphnodes on the left side of my neck, a whole chain of them with no obvious cause. I'm not worried, just showing that it does happen.
You just had a complete blood count and it was normal so there is nothing scary going on. If there was, you would know it esp with where your going with all this... There would be more significant symptoms not just a couple of swollen lymphnodes. The fact that they are present on both sides means its probably some sort of virus causing then to react. They will go down in time. You yourself said the nodes swelled up "again" which means at some point things had gotten better. That right there is proof it's not cancer because once that starts it doesn't get better. If your feeling for them, checking to see if they are bigger or smaller your probably causing them to react even more. Lymphnodes can and do swell if they are poked at. You need to leave them be, allow them to do their job. When they are done they will go back to normal providing you leave them alone. If you keep messing with them you run the risk of one or more becoming shotty (permanently enlarged).
You are fine, everything is okay. You gotta treat the anxiety or this is gonna become a viscous cycle that is hard to break free from.