BLEEDING AFTER MISCARRIAGE UNPROTECTED SEX

HI I do have a quick question girls, if you girls don’t mind giving me some advice or help (: I had a miscarriage at 5 wks 6 days in April. I had my first period June 14-20th (baby passed through in may) . Have been lightly since July 9th when my next period was due . * I have had unprotected sex mostly everyday after my first period came back. Can you please let me know what are some things it can be . I just turned 18 & I’m wondering if I’m pregnant again or what is happening . Thank you ! 🤍 * also about 2 weeks ago I took a test and a super faint line appeared . Not to sure what to think . ( this light pink bleeding isn’t stopping ) I do not have cramps or anything .