It's Been 9yrs since my Last pregnancy...

I have a 9 yr old and 8 yr old both girls 11months apart I haven't been pregnant since 2006 so I don't know what symptoms to look for For pregnancy AF is due in 6-8 days usually I'm moody and have headaches but so far I feel good a little tired but that's not unusual because I'm very active with my girls and husband Had a few days of nausea but so far I feel ok but what should I look for or should I just wait untill I have a missed period the Tww is hard We been ttc for 14months hoping for a Bfp :-)