TMI question

So my ovulation window is just about to come to an end

I was only able to start tracking this month so i assume its not 100% accurate but seems close.

Ive never had bleeding or spotting before inbetween periods and did some research on it.

Me and my boyfriend got back together a week before the end of September, but i got my period like normal, I hear some people get normal periods though but i don't know if thats the case.

What has me is yesterday I had a tiny bit of pinkish blood and today my boyfriend woke me up to some sex. But after sex I had a light brownish colour when I wiped.

Now reading up on the symptoms mine are more close to implantation bleeding. Mild to sharp pains on one side, fatigue, baxk pains and all those fun things.

But is it possible for this to show already? Im going to be testing tomorrow just incase, but after that im going to wait to see if I get my period and then test after that either way.

Im really hoping that its a positive because I wanted to suprise my boyfriend, mother abd family for Christmas so fingers crossed and baby dust!

Just these symptoms are so odd, ive miss carried 3 times (twins, one) so im so worried about this.