Hard 'roof' along top of shaft sometimes
I dont actually know if this is normal, or even if I had it before PE, but I sometimes have what feels like an almost cartilage-tough plate along the top of my shaft. Its not always there, but when it is, I can get these super hard, but slightly smaller-than-without erections, and it still hangs around even after Im flaccid, only not as pronounced.
Its not visible; I can just feel it. It isnt a vein and from the feel of it, is separate from the two main chambers. Its kind of just sitting on top of them..