hello, i just started ortho tricyclen almost 2 months ago i've been pretty consistent with them except for a few weeks ago i was on vacation and i missed a few pills by 3 or 4 hours also during that time there was daylight savings and i take them at 6 so i had to change to the new 6 which would be like 5 but i hear that shouldnt matter and since then i've taken them all on time i have sex with my boyfriend every weekend or every other weekend and we try to use condoms but we use the pull out method with or without a condom but now im suppose to take my 2nd placebo pill of the second pack today and i still have no period i feel light cramping but no period could i be pregnant?