My oil change indicator light keeps coming on (but doesn't stay, it flashes).

What is your question?

I recently purchased my 2003 VW Golf and a few weeks ago changed the oil after noticing it was time to do so (I did it myself). I used the proper oil and such, but now the oil indicator light keeps coming on, usually 10 minutes into my drive, flashes and beeps, but never stays on (just flashing). Is this a malfunction in the car computer or is there something wrong with my oil (I rechecked it, clear, full and fine). Thanx