Just need advice

I had sex the night after my predicted ovulation date and the morning after ( which was on the night of the 6th and the morning of the 7th). We started off with a condom then It came off half way through, the next morning no condom was used. Well it's now the 11th. There was no bleeding and no way for any scratches, however, the last 2 days I've had a very thick and dark brown discharge. Like there's blood but there is none. I don't think I could be pregnant but I just want advice.