so I highly doubt I'm pregnant because my SO and I always use protection and we only had sex once since my last period. I had to recalculate my peroiod prediction 4 times so far. I have a lot going on in life as far as getting ready to be a freshman in college, although I don't think I'm really stressed about it. my periods are usually always on time. anybody have any answers ? I'm scared of taking a test because I'm scared it will be positive