So, i recently noticed a strange indentation on my penis shaft below the skin. On the top side, from the glans down to the base, I can feel a vertical indent right in the middle below the skin that goes all the way down. It seems to be where the two parts of the shaft meet at the top. However, I never felt this before. I’m dealing with long covid or some sort of post-viral illness, and im suspecting it could be loss of connective tissue/fascia below the skin. Does anyone else have this, or know what could be causing this? at first, i thought i just hadnt noticed before, but it really seems sort of obvious. I saw mention on reddit of the penile septum, and the dorsal vein, but is it really normal to be able to feel this with your finger? by the way, no pain or issues with erections so far. thanks!