Hello dear,
I understand your concern.
In my opinion the delayed period in a sexually active woman gives a suspicion of
pregnancy.
It needs to be confirmed by doing a urine pregnancy test.
Usually the urine pregnancy test gives accurate results if done a week after missed period.
So you can consider doing a urine pregnancy test.
The other symptoms of pregnancy like
nausea,vomitings,increased urination,sore breasts start 2 weeks after missed period in case of pregnancy.
So the delayed period,
tiredness might give a suspicion of pregnancy but needs to be confirmed.
Kindly consider doing a urine pregnancy test.
Other tests to diagnose pregnancy are blood
HCG test and
ultrasound.
Blood HCG test gives results well before the expected periods time ie ., around 10 days after ovulation.
Ultrasound helps in diagnosis of pregnancy around 5-6 weeks of pregnancy.
Hope this helps.
Best regards....Dr.Srilatha