i took a Plan B pill (brand: Option 2) and then started my period the next day. The day after that i started experiencing a lot of tummy pains and bloating, I haven't been able to eat or drink anything because it hurts and i feel so fat. I also cannot poop and my bottom hurts. i have taken Plan B before but not this brand and not any of these side effects. Is this from the Plan B or should i see a doctor? It's been 2 days and the pain is getting a little better. Thanks!