could I still end up pregnant

so my partner accidentally cummed in me on the 16th of August but I did go to a sexual health clinic as have no conception to protect me they said I could still get pregnant from precum so I had 1 morning after pills but the day he cummed in me a little bit it was on the night time the same day I had the morning after pill so 3 days after 72 hours after I had another morning after pill so today witch is the 25th of August now and I have been bleeding for 3 days now witch I think is my period but I just want to know if I could still end up pregnant in the next couple of weeks has anyone had that happen before I had my hormonal coil removed on the 27th of July 2017 and a couple days after the removal I had mild bleeding for like 4days and then it stopped but I just want some advice thanks