brown discharge ?

So I'm almost 3 months post partum..me and my fiancé DTD a week before my 6 week check up a few times without a condom or pulling out ( big misteak) it was in the moment since we hadn't done anything for 6 weeks. Anyways he didn't pull out twice and I've had this a few times in the last two months or a little over a month of brown spotting..this past week I've had a little more I'm just confused if it's still just old blood from giving birth or I'm pregnant again 😭 with my daughter I had brown spotting for like two days before finding out I was pregnant and even tho this has been going on for a little over a week I'm just curious to what you ladies think? If anyone is a dr or nurse or midwife who knows what this could be I would highly appreciate it❤️