Two complications are of concern.
1. Rheumatic fever
which occurs because of repeated and frequent throat infections by a bacteria can ultimately cause you valve damage in your heart and joint pains
2. Obstructive sleep apnea(OSA) is a condition which can occur because of the extra tissue in the throat interfering with your breathing especially when you are sleeping. It starts as snoring
and since your body automatically stops breathing and you wake up frequently at night without being aware of it, you can have concentration problems during day which can impair your performance in college and at work. You can even fall asleep during day and feel tired and exhausted.
Better to take the tonsil
out or if you decide not to do so, please be aware of the complications and take action at first suspicion.