25 week and spotting

Al
So two days ago me and my fiancé was having sex then after we got done we got up to get dressed and there was blood. So we got all washed up and everything and was like maybe he scratched me with his nails while we were doing things. But I stopped so we went with that. But today at work I had to go to the bathroom and I started spotting a little. It's not red red but it's pink. I'm not sure what to do cause I can still feel my little boy moving and everything so I'm not sure. I'm going to call the doctor office tomorrow for sure but I'm just wondering if anyone has any ideas what it could be or if it is kinda normal every once in a while. This is the first time bleeding this whole pregnancy.