Tara got her period on july 27 - 2 weeks early, thick and black - she had sex on 19th and took an emergency contraceptive on 21st - what could it be?

Periods with Plan B: Periods can get very off schedule with the use of Plan B. Don't be too concerned though, about unusual timing of periods after using Plan B. She has put very unusual amounts of hormones into her body with the Plan B and it really can throw things way off. That's how it works. She just having the bleeding associated with her Plan B use. She may or may not get her regular period this month.