Lots of girls have irregular periods. Mine were completely unpredictable for a long time. I would skip months, was "late" alot, ect. If you’re really worried, take an at home test, or if you can, go to a crisis pregnacy center. I work at one and they do free completely confidential tests, then they offer help with alot of the different aspects of pregnancy. Just remember, God will never give more than he will give you the strength to handle, you just have to ask. 😉