Breast feeding possibly pregnant

So my baby was born in May 2020 and I supplemented formula and breast fed some ( I still do at night and like 3 times a day) well I got my period June and July and then it stopped. I had LIGHT spotting for one day August 10th. We have had unprotected sex on August 1st and 3rd but he swears he didn’t finish in me, that he pulled out way before. So did any moms period do this while breastfeeding some? Or were you pregnant? I’m scared to test! Thank you in advance!