Hey Brooker! I'm glad you joined us!
I know lymphoma is HUGELY terrifying, and I've recently just had a scare of that myself! The HA (Health Anxiety forum) has tons of great threads on lymphoma and swollen lymph nodes that you can read over, or you can post your own and get better answers! I would suggest posting this worry to that forum as you'll reach the right people there!
But honestly, your lymph node doesn't sound like anything to worry about. Ingrown hairs are notorious for causing swollen lymph nodes. If your doctor isn't worried, you shouldn't be either. They can take a while to disappear, so don't let any prolonged swollen nodes scare you!
Also, it's better to never EVER google symptoms! It'll just cause panic.