I noticed in the last couple of days that whenever I pee, the underside, corner of the glans/corona near the frenulum on the left side swells a bit and it is visibly larger a few mm then on the right side which remains the same and after I done peeing it swells back down. I have never had such a problem nor I found anything like this on the internet, I doubt it that it was like this since my 29 years on earth and just seen it now for the first time. It doesn't hurt, it isn't a lump, I have no rashes/redness no nothing however almost 3 weeks ago I had some urethral discomfort ( not when peeing though ), and the upper side of the meatus, close to the frenulum hurt a bit when touched, also on two occasions when I ejaculated it hurt and burned a bit, like there was some pressure/tension in my urethra, I thought it was an incoming UTI and took 5 days sumetrolim and that sensation has gone away. I rarely feel any discomfort at the moment in my urethra, I did a urine-culture test and came back negative as in no infection BUT I noticed this swelling stuff in the last 3 days and I have no idea what can it be. At first I thought it might be balanitis but again, I have no redness/itching/patches,painful urination, nothing at all. Any idea what could make the glans, well a small portion of it somewhat " swell " or point a bit outwards WHILE PEEING, then unswell?