Okay all of this started a couple of weeks back. 4 weeks ago I went to my doctors as my testicles was swallon ( there was no pain at this point ) however when the infection seemed to be going I had like funny pains come from the testicles like at one time it would be itchy then it would be like a hard kind of pain my the testicle and it also goes up through my penius. The first time I went to the doctors he gave me some antibiotics and said to me it should go down on its own. So for the past 3 weeks I had the pains started that not painfull but has now got stronger. Don't ask if my testicles are swallon because I really don't know you must think I'm dum but I never checked my testicles from a young age so I didn't really know what they were supposed to be like and I'm now 16. The first time I went to the doctors he said he found a slight trace of protein could this cause I'm really scared this might be testicle cancer as its so common.

I've made an appointment to see my doctor on Friday as that's the soonest he can fit me in please if anyone else have had these symptoms please tell me I'm so worried

I went to the doctors today he told me everything was fine. He said the first time I went to see him I had antibiotics to treat an infection ( the protein was the infection he says ) he said the reason its painfull now is when the testicle is hurt it forms a bag over it to protect it this bag contains fuluid around the testicle and it normal while having the pain you get the pain every now again he said this should last for about 7 weeks is this right?

Yes, the same thing (or darned close to it) happened to a friend who's in his 70's last week! His doctor said the same thing about taking time to properly heal.