Why do I feel testicular pain after lower back surgery?

I am 3 months out of lower back surgery. Titanium disc replacement, same day scrotum felt like I got donkey kicked in the nads. Left side turned of scrotum turned black and blue, very painful. Went to ER week after surgery to make sure it wasnt testicular torsion. ER did ultrasound, came back normal.

I am also experiencing numbness in my inner lect thigh at the crotch and the left pubic are always feels like pins and needles (weirdly, I feel same sensation in my left shoulder blade since the surgery) it is uncomfortable to wear jeans.

I was told by my surgen the feeling of numbess is normal since the nerves are repairing themselves. I believe it is something different since the tubes attached to my testicles is swollen on left side and my right testicle stays "stuck" up clise to my body while my left just hangs, while a painful dull ache has started to become noticeable in my right testicle.

I have my 4 month followup in October.

I wish I had an answer to my concerns.

Your symptoms are concerning and warrant a thorough investigation. A few things to consider:

Nerve Damage or Irritation: While some degree of nerve irritation can be expected after surgery, especially in the area where the surgery took place, it should resolve over time. Persistent numbness and unusual sensations, especially in areas remote from the surgery site (like your shoulder blade), are unusual and need to be addressed.
Hematoma or Swelling: The black and blue appearance and the sensation of being "kicked" could indicate bleeding or a hematoma in the area, which can cause pressure on nearby structures, including nerves. While hematomas can sometimes resolve on their own, if they're pressing on important structures, they may need intervention.
Testicular Issues: The symptoms you've described concerning your testicles, including the color change, the discrepancy in position, and the dull ache, are concerning. While the ER ultrasound did not indicate testicular torsion (a medical emergency), there could be other issues at play, such as inflammation, infection, or a varicocele.
Referral to a Urologist: Given the issues you've described with your testicles and scrotum, it might be prudent to see a urologist in addition to your orthopedic surgeon. A urologist can offer a specialized evaluation of the testicular and related symptoms you're experiencing.
Physical Examination and Imaging: The cause of your symptoms might become more apparent with a thorough physical examination and appropriate imaging studies. Magnetic resonance imaging (MRI) or computed tomography (CT) might offer more detailed insights into what's going on in your lumbar area.
Document Everything: Make sure to keep a detailed record of your symptoms. Take photos of any visible changes and note when each symptom began, any variations in intensity, and any patterns you notice. This information can be invaluable for your doctors.