HI and thanks for using the forum.
Well, the only way to know for sure if you are pregnant or not is to take a test. Home pregnancy tests are very accurate, so you can purchase one at the grocery store/drug store and see what it says. It would not be too early for you to test, so you can go ahead and do that when you want to. It is possible to have an "off" period every once in a while, so if the test is negative, then wait and see what happens next month. IF you have another abnormal period and a pregnancy test is negative again, then you may want to see your ob/gyn to make sure that everything is OK. I hope this helps. Good luck.
Bridget
I ment it was not as heavy as it normally be!