Penial vein with small lumps

Hardened penial vein developed in last 2 days. It is just below the skin running along most on the length. It is 1-2 mm in diameter with some small bumps along it. It gets bigger during an erection, which is when I first noticed it. There was also one encircling my penis, just below the head, but this went away after the erection went down. Is this vericose veins? Reading other blogs it sounds similar. Is a trip to the doctor necessary, or just wait and monitor? It does not hurt.