About a month ago our condom broke. I took a Plan B and all seemed good as I got my usual period a couple days later. That lasted the normal 4-5 days (I have a very short period normally) but then only 3 days later I got another full 4-5 day period. I didn't think it was too bad, just a little weird, but then the same thing happened again after only 2 days of not having it. Now I'm having it again (its the usual time) and its a heavier flow than I have ever had before. 

If anyone has any idea whats going on, it would be much appreciated. I have lookked through Plan B symptoms and this wasn't really mentioned. I'm no longer worried about being pregnant, but I still think something serious could be wrong.