Help need advice

So I have a light red bleeding like pink it wasn’t too much but I didn’t have any bleeding after that but I was reading what it could been if it was my period coming or implantation bleeding, and I’ve had my very first period after birth at 6 weeks pp.I didn’t get my period yet I’m not 1 week late I took a test at 5 day late on period but I was negative. After that I didn’t take a test again. Currently EBF my 2 month old she’s almost 3 months. No birth control. I just want advice on what should I do and I’m not sure what to do now.