Hello dear,
I understand your concern.
In my opinion the chances of
pregnancy appear rare in your case because the intercourse was protected with condom once and pull out method was used the other time.
In neither case the semen was ejaculated inside or near the vagina.
So the chances of pregnancy appear less.
But the confirmation is done by doing a urine pregnancy test.
The test needs to be done a week after missed period for accurate results.
The symptoms of pregnancy like
nausea,vomitings,increased urination,sore breasts start 2 weeks after missed period.
I would like you to do a urine pregnancy test after a week as for now she is just 2 days late.
If the test is negative the delay in period could be due to
stress regarding the thought of pregnancy or any.
Stress can cause
hormonal imbalance and cause delay.
So relax and check for the periods.
If test is negative wait for spontaneous onset of periods.
Nothing to worry.
Best regards...Dr.Srilatha