If you were to show symptoms and doctors decided to prescribe antivirals, you'd get Relenza rather than Tamiflu, that seems to be the option for pregnant women as its inhaled and seen as less risk to baby.
I can understand your concerns but by all accounts this seems to be mild in most people.The CDC reckon 1 million people in the U.S have had it and most have recoved without seeing a doctor - the trouble is, interviewing people that have recovered and are now fine is not sexy news.
I'm 28 weeks pg, asthmatic and came back from holiday last week. Had my 28 week check with midwife on Monday at 9am and was fine. By 4pm was coughing, aching, headache from hell and in bed. Slept through a large part of Tuesday. Felt rotten until yesterday. DH had rang doctor, they said it could be cold, viral infection or possibly flu. Feeling a bit dizzy/grim still but the aches and headache have subsided. I wouldn't have taken Tamiflu if offered or Relenza, just wanted to use the old tried and tested method of fluids and rest. I had normal flu in December and this, whatever it was, was nothing in comparison.