Implantation?

My girlfriend and I had unprotected anal sex about a month ago. Afterward, as a precaution, we used the morning after pill. It made her very sick. About a week after the act, she had a very small amount of reddish-brown bleeding. When she went to a doctor for an unrelated issue about a couple days later she asked about it. The doctor said it could be due to the large amounts of hormone she ingested, which was way more than her body weight needed. We've also heard that the bleeding could mean that implantation had occured. We want to know whether that meant that she is actually pregnant or not. Is a small amount of bleeding about a week after mean she is definetly pregnant? Any advice would be appreciated!Implantation?
First of all, unless all you had was unprotected anal sex you have nothing to worry about unless her rectum has a direct line to her cervix??? If you had vaginal sex then implantation happened up to a week before you had sex that time and the morning after pill wiped out that fertilized egg most likely.
probably the hormones. she should take a test if she misses her period, but i doubt she will--wrong hole & all...
If it was anal sex then there is a 100% chance you are not pregnant
u can't get pregnet from anal, but u can get an infection or worse without being unprotected
Dude, you can't get preggs from anal sex!