iIf you have experienced this, please enlghten me with your insight!

About 5 days ago while I was dry jelqing I felt a pain, my penis went numb and felt as if I had the symptoms of a panic attack come on spontaneously ( my heart started racing, got a head rush and I felt very hot). I took a couple of days rest and upon returning to my regimen I took it easy. I was fine the first day but the second day of continuing I felt the exact same pain as described above, except this time it occurred while I was stretching.I would like to further explain that I had a grip at about mid shaft and was doing a light stretch while the upper half of my penis was engorged as if i was clamping (So that I could have an adequate grip.)