PLEASE view this 😭 implantation bleeding?

My boyfriend & I are currently trying to have a baby, we've been trying for the last three months now. Long story short; we have had sex MANY times & he has came inside of me everytime. We even had sex on my period last month. I'm suppose to start my period either today or next week but I started having this brownish discharge yesterday. I automatically thought of implantation bleeding, I have had no cramps or anything but today the amount of discharge/blood has increased & its starting to be a more redish color. Is this implantation blood or my period? Help. 😭 idk how many more times I can tell my boyfriend I'm not pregnant