Postpartum Sex

I just had a baby in March 2019. He is my second baby. He was 9lbs 1oz and had a huge head. (All natural) And I didn't feel this way after my first baby ( also all natural.) I have absolutely no desire to have sex. So I got this app and starting tracking to see when my ovulation is. And sure enough the only time I'm horny is when I am ovulating. But still even then I still don't really want to. In my canal on my bone I guess the pelvic bone or whatever it still hurts. Like its sore. So it makes me not even want any sexual activity. Any tips or tricks?