Cording in armpit lymph node...really scared

2 weeks ago i had a swollen lymph node. Didn't think anything of it until it started spreading. Now i have a tightly pulled "cord" from my lymph node to almost my elbow. I can feel little bumps up it and you can even see it through my skin. Now it's starting in my right arm as well. It's so painful. I have a doc appointment Wednesday morning but I'm freaking out. Both arms hurt. Both nodes are swollen with tight tunnels or cords coming out of them. You can distinctly feel them running all the way down my arm to my elbow. Any idea? The only thing that comes up about cording is that it's a side effect after node surgery but i never had surgery before. I'm beyond frustrated that nothing on the internet is coming up about this. I've been googling for days now.

Has this happened to anyone before or someone you know? Obviously I'm not looking for a diagnosis, i know y'all aren't doctor's so no need to leave those "we aren't doctors" comments... I'm just asking if anyone has DEALT with this before in personal experience