Chance of pregnancy?

Dulanie

About 4 months ago I gave birth to my handsome baby boy. My boyfriend and I haven’t used protection and I’m not on birth control. I’ve been tracking my ovulation because I do have irregular periods since I’ve given birth. Only have had two periods. I did have a c section and I do not get cramps when I get my period anymore. Just shows up whenever.

I got a positive ovulation test CD27

Next day I got my peak ovulation test CD28

My boyfriend and I had sex CD27 unprotected. I’m currently between 5-7dpo because I’m still unsure how to read the damn ovulation tests just know I got a positive. And experiencing cramps and back pain. Now with my first I didn’t have any of this. Could this be a sign of implantation? Am I really more fertile after I give birth? Currently CD34 so it’s to early to take a pregnancy test.

Pic of ovulation test.