My Period is 9 Days Late

Vendela

My period is currently 9 days late I’ve taken two pregnancy tests the last two mornings with fresh morning pee and they were both negative. I made a doctors appointment for Friday but I want to know if anyone else has experienced this and ended up being pregnant. Also the last couple of months my periods have been a little late but never this late. I’ve been feeling really tired all week with headaches and I’ve also been experiencing heart burn. I don’t know if maybe I’m just getting a flu which is making me late or am I actually pregnant? My boyfriend and use condoms but have used the pull out method here and there in the last month but I don’t recall the days.