/serious answer
Have you had these problems before? Maybe your skin is quite sensitive. Try using a special cream for sensitive skin. It also helps if you apply skin moisturizer after shaving. I have a nice little cream by Proraso, but I'm sure you can pick up something cheaper in your local drugstore. And stay away from anything that is contains perfume and/or alcohol. Like one of those smelly aftershaves. Smells "good", but irritates your skin like hell.
If all that doesn't help, maybe try switching your shaving method. I tried several electrical shavers when I began, but found out very quickly that those didn't work for me. I would look like I'd been fighting with a rabiate cat afterwards. Then I went on to wetshaving, but the results still werent the best. A year ago I switched to traditional double edge shaving. DE-shaving is generally much more gentle to your skin, because you only have one blade that actually cuts the hair instead of ripping them out like most 5-bladed razors. Plus DE-shaving is like 20 times cheaper than ordinary Gillette shaving.