I'm losing hope here.... I had what was classic implantation bleeding 3 days ago and it finally stopped last night.  I was so excited... my boobs hurt, I'm bloating horribly, I'm nauseous and emotional.  All great signs....well we got excited and celebrated last night by doing the deed.  This morning when I woke up, bleeding started again... now it's heavier, but still dark and brown.  Did I just miscarry because I had sex last night?  Is there still hope?  I'm devistated...this will be miscarriage #3 if so.  I'm terrified I just messed everything up.