Hi and sorry you went through this. I am wondering if you traveled outside Germany before this happened? Did the doctor say what kind of worm it was? If you went to Asia, Africa, the Carribean or South America you could have been exposed to a parasite called Wuchereria or Brugia that can cause "elephantiasis." This usually gets in the lymph system and early on can get into the lymph nodes especially the groin area, testes, blood vessels of the epididymis and causes swelling and pain in those areas. At first you have little or no symptoms. It is transmitted by mosquitos. So wearing a mosquito repellent when in those areas would help.
Did the doctor do a blood smear on you to see if you have any parasites in the blood? They can also do serology to look for elevated levels of antifilarial IgG4 in the blood. My worry is that pulling out one worm may not be the cure of this. There may be other worms in the lymph system or blood. It depends on what parasite it really is. I suggest you see an infectious disease specialist for more testing. Or a doctor that is good with parasitology. Another thought is did you swim in any fresh water area (non ocean or non salt water)? There may be other things you can get in an area like that especially if you travelled.
No, the doctors had no clue as to what parasite that was. They have handed over the parasite to me for further investigation.I used to swim in the public swimming pools in the last few weeks and that was my only contact to fresh water area. I have not travelled anywhere for more than a year.
They have put it in a tube but without the preservative and I have made an appointment with my house doctor on Friday and I will rely on him to guide me through the process and where should I go next.