I have been feeling light headed and a bit nauseous. my iron and bp and sugar levels are all normal. what could this be? i am on the pill and have taken some a bit later than i should have but never skipped a pill

Pregnancy worries?: It can be hard to tell if a woman is pregnant because some of the symptoms seen in early pregnancy can also happen in non-pregnant women. A home urine pregnancy test gives a very reliable result if done correctly, at 3 weeks after sex (3 weeks after when conception might have occurred) or 1 week after missing one's monthly withdrawal period.