Two nodules on right teste (one on the side , one in the back)

I am a 19 y.o. male who for about 9 months now, has had two nodules on my right teste. One nodule is located on the right side of the teste, the other toward the back of the teste. Neither is located in or on the epididymis. Both nodules are hard to the touch and they are now the size of a b.b. I notuce no pain; however, in the past 2 days, I've notices a pain in my right groin ( where the hip attaches to the thigh) when walking. As well, ove the past three months, I've been experiencing extreme fatigue. I had them checked out last july, had an ultrasound done as well. They were a bit smaller then and hard to find. Yet the doctor said they were but nodules and I had nothing to worry about. Any comments and suggestions would be appreciated.