Is it normal to still have congestion 10 days after septoplasty?

It is still quite early after your surgery.  You can expect to feel congested for about 4 weeks after a septoplasty.  Best to speak with your surgeon if your headaches continue, or any other symptoms worsen.  

Thank you for your question. 
With any nasal surgery, the name of the game is patience. At one week, we would expect you to have quite a bit of swelling and bruising still noticeable and may have trouble breathing out of one or both nostrils. By the end of two weeks, typically, you will still be swollen but look more like you have a bad cold, rather than post surgical. Swelling can take up to a year to be completely gone, however, by 9 weeks you will look very good and should see big difference from your pre-op pics.