could I be pregnant?

My period is unsettled and I went past its sell-by date the pill about a month ago. I suggest I am a little behind (about a week) but I used condoms every time I have sex and they hold never broke. I took a pregnancy test almost 4 days ago and it said I wasnt pregnant. Could it just be irregualr make happen of the pills?
Answers:

Can you go through puberty at age 28?

I deduce that your period is purely irregular from not using birth control. You've been more than smart by using condoms and condoms (in my experience) work better than the pill anyway.

Anyone suffer from migraines?

More than imagined. When you go rotten the pill your system tries to get itself regulated support to normal. You may concentration late or precipitate periods when you find off the pill, or heavier bleeding, or more cramps.

Where to put a tampon?

More than credible its the change from the pills. If you havent started your interval after a couple of weeks, take a home preg assessment just to be not dangerous.