Late period...negative test.

So my cycle is always 35 days & super regular (5 days of flow) anyways I’m 2 days late and got 5 negative test. I took a test everyday starting 2 days before my period. How long should I wait to go to a doctor if I don’t get my period? This is month 1 of TTC for us. Should I keep testing or wait ? Our month was kinda busy so I haven’t even started tracking my ovulation yet or anything ☹️