How not to stress??!!??

Okay, so i keep hearing that you should try not to stress while ttc....yeah right! How? Im 34, ttc #1, worried that im too old, working 2 jobs (6 days a week), oh yeah, and in the process of buying our first house (inspection is today and my boss wont let me off to be there). This is my fertile week, got my solid smiley on OPK monday, bd that night and felt sick all day yesterday. Im sure its the stress getting to me that's making me feel nauseous, and im trying to lower my stress level, as im high-strung by nature lol. Sorry so long, thanks for letting me vent ladies!