Help please

Yvette

So I’m 9 weeks pregnant and today I rubbed my neck and felt a lump. It’s swollen and tender on the right side of my neck. About the size of a golf ball. I thought maybe it’s a lymph node but I don’t have any where else swollen. It’s located below my ear on the side of my neck. Im freaking out cause my doctors office isn’t open until Monday. I’m scared because my MiL had something similar show up and she was just diagnosed with thyroid cancer. I had all my labs done at my first OB appt and my thyroid levels were normal. What else could it be? I’m not sick nor have I been recently. Help please.