Implantation

hey guys so I’m new here and not sure how this works, but I need HELP. See I was suppose to start my period on the 24 of July but on the 19th of July i started getting a brown discharge all day then the 20th again brown discharge then pink later on the day. The 21st I was spotting all day but on and off.. the 22 & 23rd I was bleeding bright red where I had to change my liner to a tampon. It’s now the 24th and I’m still bleeding and now with clots. Can anyone help me Figure out what this can mean. I’ve had sexual intercorse all month unprotected, I had the nexplanon removed on April 26 it’s been more than two months. I had a regular period on the 1st-4th esrlier this month in July. Please help guys and thank you.