When Is It Possible To Have Sex After Giving Birth?

Hi:
I'm a new mother. My baby's age is 42 days. My bleeding stopped 10 days before. I took my first shot of depo provera 12 hours back.
Now is it safe for me to have sex right now?
We (me & my partner) want un protected sex right now.
Will be there any risk?
It's my first shot of depo provera.
my baby's age is 42 days.
I took it 12 hours back.
my bleeding stopped 10 days before.
my delivery was done by a cosmetic surgery.
that's all.
regards,
poly