I wasn't able to get the Plan B pill and take it until almost 36 hours after. Almost exactly one week later I have cramps, I have been extremely moody, and I have some very VERY dark brown (almost black looking) blood/discharge showing up in my underwear. It's pretty heavy (I think) and my normal period is also very heavy. The thing is, I'm concerned about the fact that I'm bleeding again, and so darkly, only a week after my period. I know the last time I took Plan B one-step my symptoms were a lot less severe (mild nausea, breast tenderness, spotting, etc) so I'm wondering if it's normal to have two completely different reactions to Plan B and also whether or not I might be pregnant?

Any and all answers are appreciated!!!