Yes, force yourself to eat. It doesn't have to be a lot - a couple-three hundred calories within 15-30 minutes of your workout. Your recovery snack should include a bit of protein, so fruit alone isn't the best (vegetables alone would be fine, if you have the stomach for 200 calories of vegetables right after a workout).

Replenishing your muscle glycogen stores when they're primed for it not only sets you up for a faster, more complete recovery; it helps avoid the ravenousness that can last for two or three days after a long, hard workout when you don't re-fuel immediately.

I just posted a link to a Q&A about sports nutrition in the Nutrition subforum.