Miscarriage, pink discharge only after sex!

Misty
I found out I was pregnant on February 26th started bleeding on February 28th to March 6th. So it's been 2 weeks since the miscarriage! Yesterday and the night before I had sex. Both times, when I wiped after sex it was my partners cum but it was pinkish.. He didn't cut me or anything like that. I don't bleed afterwards, it's just that one wipe after sex. I'm wondering if this has happened to anyone else after miscarriage? Should I be concerned?