Implantation bleeding or period? *TMI POST*

TMI POST!!!!

I stopped taking my birth control for 2 period cycles, restarted them 2 days prior to having sex multiple times a day everyday for a week with my boyfriend, a couple days after we’ve been having sex I started feeling a little nauseous, it continues for a week (it’s still a little on and off) I’ve had super sweat hands and feet, uncomfortable back and hunger has increased. Here I am thinking wow am I pregnant? Well I saw a brown spot on my sheets after we had sex and when I wiped it was only a little bit of pinkish blood. The next morning the blood was still there but just faint and a little bit was in the toilet. I showered, went to the restroom again and a little more blood. Today, I’m bleeding but it’s not like my normal period that’s usually medium-heavy flow it’s been light but the redness is Forsure there now when it’s in the toilet or wiping from the back, (I go on my front with a wipe since I wear a pad and its more pinkish on the wipe. So does anyone have any ideas??