Thanks for the query. Nicotine
containing patch may not affect the periods.
But it can affect the fetus when used in pregnancy
Urine pregnancy test kit may not detect early pregnancy sometimes.
So, once go for blood test
If test comes negative, the possibility of pregnancy is less.
Consult gynecologist once and take tablets to induce withdrawal bleeding.
And you can continue the patch.
If the test comes positive, the possibility of pregnancy is there.
In that case, you have to stop using the patch.
And have to continue the pregnancy with regular antenatal checkups and ultrasound