Question: TTC but NEGATICE

TTC for 3 months now, I'm 30yrs old, no kids. cd-70, dpo-50, 37 days late; average cycle is 33 days. Last time prego test August 31st & it was NEGATIVE. Last period was in June 26th. Been regular for the past 6 months since my last period. Went to the Dr about two in a half weeks and he said he wants me to wait & see if I skip another cycle before he gives me something to induce my cycle if not prego. My diet or exercise has not changed. I haven't been as stress & when I was stress during those 6 months, I still got my period.