Melissa,
I would advice you to go and see a LC. I think that you should give it a try for a bit longer, and I guess that after 10 days, your milk supply is not fully established yet, so I guess that expressing might be even frustrating for you.
I will tell you my story: since my DD was born, I thought I had problems with sore nipples, which turned out about 2 weeks ago that it was dermatitis caused by an allergic reaction to a silicon part of my breast pump (Avent).
After 3.5 months of dealing with it, the situation was so bad (skin shedding off, bleedin, cracked nipples, unbelievable pain, etc) , I decided to stop bfeeding until my breasts were completely healed, which made my milk flow almost non-existing (as a matter of fact, my left breast started to dry up).
After getting encouragement from a board in this site, I decided to call a LC from La Leche, whom just by seeing me told me what I had (before, a midwife and a nurse saw me and both told me that I had sore nipples)
After having my breasts healed, I worked on getting my milk supply back and went to see the LC because DD wouldn't take my breast anymore - she realised that the bottle requires less work than taking my breast. Since she is 4 months old (I was planning to stop bf at 6 months), I decided to keep on expressing and giving her my milk in a bottle. We both are very impatient and I really don't want to go thru that process aain with her.
What happens now is that as a matter of fact, I have to express every 2 hours in order to keep my milk supply up (I use the same breast pump sans the silicon part), and my left breast still won't produce as much milk as it used to when I was bfeeding, but the situation is way better than when I was squirming in pain when I had to bf, so better that now I am considering to keep on expressing for longer than 6 months.
So basically, if you are having problems with bfeeding, seek for appropriate professional help so things won't get worse and at the end, if you still decide to express, be aware that you will have to do it more often than usual and that you will always have to be paying close attention to your milk flow, but at the end, it's possible!!
Good Luck