Hope it turns out to be nothing, chances are it will.
I felt like that when i was taking test boosters like NH2, which was not that effective, but took stock of symptoms, especially after knowing someone who it turned out to be the big "C", but for me it was fine. Although, i might add it was more disconfort, rather than, pain.
At the same time, when coming down to there, disconfort can morph into end of the world senario , quite easily with abit of unwelcome imagination.
And that was after being nuerotic/concerned enough to go for 2 tests 2 years apart. Best be on the safe side, but I think thar googling symptoms is goig to come up with worst case senarios, i did it. Not good.
Hope it turns out to be the same as it was for me - overeaction.