I asked my GP the same thing when I went to get something for a cold that just wouldn't shift a few weeks ago, and got told "The same thing you'd do if you contracted normal flu - take some antibiotics if you need to and rest".
I don't think medical professionals see it in single cases as any more dangerous than your usual bout of flu.
I also had my booking appointment today and my midwife mentioned it to me. She said being pregnant makes you high risk when it comes to swine flu and if you get a high temp plus two other flu symptoms to go straight to the gp. Apparently the advice re tamiflu changed this week too as preg women are now supposed to be given it whereas before the advice was not to. I am glad my midwife is very switched on. It makes up for the fact the hospital where I will deliver is one of the worst in the country!