Just wait til birth get DNA test cause it could be either
Ignore the first message, I totally forgot about the 2 week process of the baby implanting and all that good stuff.
Its most likely your boyfriends. Because 2 weeks aren't counted there. If it was the flings then you would be around 7 weeks pregnant.
Okay so I was trying to calculate this myself. And this is what I got, I could be totally wrong. But, if it is the fling then yes you would be around 5 weeks pregnant. But if its your boyfriends, then you could be around 3 weeks pregnant here. Now, its very hard to get pregnant with the pull out method but is likely. So I'm a bit iffy on this. But if your boyfriend did, then perhaps its likely it's his and your not that far a long as you think you are. I tested positive at 3 weeks pregnant. I hope that was some sort of help. If not, I'm so sorry.