Pink spotting after intercourse

So, yesterday my partner and I had intercourse twice. The first time was in the morning and it was rough and I think he hit my cervix a couple of times and it HURT. After I got out of my night classes we went at it again. Both of us came to the big O. I went to the restroom and wiped and there was clearly a pink color on the tp. I've known him since I was 13 and he was 13. We had been best friends up until we started dating 6 months ago. We are now both 22 and happily together. I tried to make an appointment to see my Ob-GYN but she's on maternaty leave until the 7th of March. Any idea of what it could be? We also do not use any sort of birth control method (condoms, pill, withdrawal, etc.)