Implantation bleeding or period?

So I have a 7 month old. I had my “period” in January for two days.. and another for two days in February since my son was born and I haven’t had any bleeding for a month or so.. I took a ovulation test April 11-12th and they were super positive.. we BD a few times. today I had this ..? And I had some cramping mild cramping.. can this be my “period” since having my son in September?? Or implantation bleeding? I also breastfeed my son.