Had a tonsillectomy 1 1/2 months, i have tightness, i yawned the other night and felt as if i pulled a muscle in my tonsil? now feels sore on side?

Now,That's A Stretch: When wounds heal,they form scar tissue,which is less flexible than the normal tissue it has replaced.With time things even-out,but initially it can feel tight.When you yawn,you stretch the tissues in your throat so you were probably feeling some of the scar restricting some of the stretching.You should be back to normal in another month or two.In fact some yawning might help it stretch back sooner