Hi I Have A Concern About My Period. I Had

Hi I have a concern about my period. I had unprotected sex on July 7 and I got my last normal period on the 19th of last month. I had unprotected sex again on the 10th of this month and the next day I had sticky secretion with spotting thinking I started my period but it's only been spotting and hasn't stopped. I'm one week early I should be getting my period until the 18th of this month. Please let me know what you think could be going on