Is it normal for periods to take a drastic change all of a sudden? I started my period when I was 12, and I got off really lucky because I never cramped up. I never had PMS, I never ached, got bloated, or got pissy. I'm 18 now, and my period is going nuts. The cycle is totally sporadic. I've gone from 21 to 42 days in between, and the flow is actually getting lighter. I've started actually getting PMS and get pretty nasty cramps and attitude. I'm pretty sure finally getting PMS is normal, since I figured my years of uncramped bliss wouldn't last long. But sometimes I don't feel whiped out, but last month I was too exhausted to even kneed the bread dough I was making. My mom's slightly concerned about this and wants to take me to a gyno, but she wants to find a good one before we do anything. I'm concerned too, but mainly because I just want to know what the eff is going on! It wasn't gradual, it all just kind of started earlier this year. I've had a boyfriend since last summer, but we don't have sex. I've heard that can impact it. Any ideas?