I am one month off my birth control pills after six years and was supposed to start my period yesterday. could i be pregnant or the hormones are messing up my cycle?

Hard to guess: It can also 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 urine pregnancy test gives a reliable result 3 weeks after sex (3 weeks after when conception might have occurred), or 1 week after missing a period. An Ob-Gyn doctor can evaluate any persistent or worrisome symptoms.

Hormones: A pregnancy is possible, though it usually takes several months after going off birth control pills for ovulation to return (& thus for pregnancy to be possible). The change in hormone balance after stopping the pills can affect your periods for several months. If a pregnancy test is negative now , it is probably fine to wait several weeks to see what happens, then consult Dr if still no period