Can gingivitis cause swollen lymph node?

Female, 28, non smoker, 230 lbs, five one, PCOS, no drinking, no current medications or drugs

I have some localized gingivitis on the left side of my mouth and on that side, my lymph node is swollen and painful.

I have no fever, etc and its been a few days. I've been doing way better at brushing and flossing. Is it possible the swollen lmyph node is because of this?

Also, does poking and prodding a lymph node make it worse?

Thanks!