Sensitive FingerNails

I have found over the last several weeks that when I push on my fingernail bed, the skin underneath is VERY sensitive.  Even if I push down on the tip of my fingernails they hurt.  I type ALL day long, but use the beds of my fingers (NOT my fingernail tips) to type.  Does anyone else have this problem?  I don't have very short nails, so this is not a result of me clipping my nails too short.  My nails look perfectly normal (no splitting, ridges, discoloring, etc.).  I'm just wondering if this is being caused by all the typing I do during the day.

Any comments would be VERY helpful!  THANK YOU!!!

I have this some days as well, but not all the time. Sometimes it makes it hard to type as well, and since Im an online student, its difficult. I keep my nails long-ish, enough that if I look at my fingers (palm side) I can just see the tips of my nails. I think I have less of a problem then, because the tender skin isnt touching everything, just my nails.