Uhh I’m lost

So I gave birth in August. I breastfeed so I haven’t had a period since October 2016.

I had sex for the first time since then, it was unprotected. I couldn’t tell if it was during ovulation since I don’t have a period.

Sex was last week, this morning I wake up to light red blood when I wiped. I’m FREAKING OUT!!

Could this be implantation blood already? He didn’t finish in me. Or am I out of nowhere getting a period?

I’m LOSING IT!