light brown discharge

so I’ve had light brown discharge for a couple days, my next period is due in 12 days.

I read some things and it says it can be ovulation spotting or implantation.

I got it a couple days ago and my boyfriend and I had sex about a week before (for the first time in 6 weeks as it’s a long distance relationship) , I was wondering can you have signs of pregnancy that early on ?

And ovulation sporting is usually pink ish and only lasts 2-3 days

I’m extremely worried and wondering if anyone can help .