Hello... about a week ago I had my period and last night I had it again for one night. Its not heavy and is kind of brownish and I'm scared that I got pregnant within the last week and didn't realize it and then had a miscarriage which is tearing me apart to think that's what it can be. I'm in my early twenties and use heroine somehwat regularly and the night I got it the second time I had used. I never planned on having children this young... especially till I get sober... but I never wanted to loose any either...