On the 5th jul I finished my period on the 7th sat 5am I slept with a guy he said he pulled out before he cummed but I don't know if he did, and wed I took the morning after pill (4-5 days later so I don't know if it took afect) then the 13th jul I got back with my boyfriend and slept with him that morning and on 16th of jul I bleed a little tiny bit not for long but it went away what does this mean? I am very scared if I am pregnant if I would be able to tell who the father was can you know the exact dates by getting a scan or something if I was? Please help would I be able to tell who the father was or no?

Short and sweet.
Q: can you find out the exact day you conceived
A: NO

So I would never know who the father was unless I got a DNA?

Correct.