Sex during implantation

Help! I believe that I could be going through implantation because I noticed light brown/pinkish spotting today. Not being sure, my husband and I had sex and after noticed more pinkish discharge. I looked into it and found articles saying that sex during implantation can drop your chances of the embryo implanting. Does anyone know this to be true or just a myth? I’m worried that I could’ve ruined my chances.