I am so confused! Early period, implantation bleeding, positive OPK?!

Is this a positive ovulation test? I am spotting/bleeding right now for some reason. My period was 15th-22nd last month and my fertility window started yesterday according to Glow. 
Why am I bleeding?! We have had sex 3 times this week (except today). This has never happened. Today is also the first day I have ever taken an OPK. Could the bleeding be implantation bleeding?
We generally do not have sex while I am bleeding... Should we still have sex? If we have sex in the shower (because of the blood) will I still get pregnant?
I am SO CONFUSED this month! This has never happened!