OPK AND BBT QUESTIONS

Vicki • TTC baby #1 trying to stay positive throughout it all Baby dust to everyone
Is OPKS and BBT really needed to get pregnant because I find it more stressful tracking my ovulation and temp I just find everything stressful about TTC maybe I should just stop and see what happens 
Also If you have a regular period does that mean you always ovulate every month or is to possible you don't ovulate every month with a regualr period?