Could Headaches And Itching In Ears Be The Symptoms Of Cold?

I am a flight attendant, and I was commuting home after working a long day. I had been experiencing headaches and tenderness behind my left ear. I also discovered a small pea sized lump just below my hairline on the left side that is also tender. I am still recovering from being sick the previous week. My ears have also been itching a lot internally. I used an over the counter ear drops for swimmers ear because right before I had come down with my cold I had used a in room jacuzzi at an overnight the previous week, and woke up the next morning and was congested and my ears were also bothering me as well. Is this all related to my cold?