Can Mono Strike More Then Once?

I would first like to introduce myself. I am a 29 year old female who at the age of 16 contracted mono and strep at the same time. I was always told that you could only get mono once. I would also like to add that I am a "hypochondriact" I suffer from mild depression, general anxiety disorder and obsessive compulsive dissorder! Yes I am a mental mess.

I worry about being sick all the time and have convinced myself that I have cancer. It's no laughing matter, I end up suffering from sever panic and anxiety attacks from this negitive thinking.

Anyway for my question: this past october I had a nasty cold/flu, horrible head congestion and plugged ears. The cold eventually ended up in my chest and im still coughing from it. During the second week of the cold/flu I noticed a swollen pea sized lump that was soft and movable non tender underneath my right jaw/chin. I freaked out because it didn't hurt and poked at it until my entire side of my throat hurt.

November third I developed a nasty ear infection, left ear opposite side as the swollen lymph node. I ended up in the er because the pain was so bad. At this point I was and still am convinced that I have lymphoma. The er doctor felt the nodes. Looked in my throat and ear and told me she didnt feel I had lymphoma and told me to stop poking at them. I felt better mentally for a week or so and then started to poke at the swelling again. It was still the same size. 5 days later while taking a shower, I decided to feel the swelling again. This time it was bigger and I fear I have more swollen nodes. Sometiems they are tender and bother my ear, I feel pressure inside my ear with a dull pain.

A friend suggested mono but I had already had it, is it possible that mono could reactivate? I am a highly stressed individual and the nodes poped up during my cold.

I am not looking for a diagnosis just wondering if what I am speaking about sound firmilar to anyone.

Thank you in advance!