Miscarriage?!

Anna

So I had unprotected sex and I was bleeding after every time we had sex and I went for the morning after pill and didn’t stop bleeding for a week or two after and then towards the end it was brown!,I researched about it and some say it’s old period blood or an miscarriage and I was like 4/5 days late for my period and Then I had sex and was another like 9/10 days late until I came on it but do you think the brown blood meant an miscarriage?!