I don't even know what to call this! PLEASE HELP?!?!

Yesterday I woke up and I went to the bath room and there was a lot of dark red blood on my underwear. I put a pad on but I was really confused because I just had my period 9 days ago.. I had sex the night before. And there globs that range in size and  look gel like and they are sticky and string like.
At one point I was going to the bathroom and I looked down and there was a dark red string of blood from down there and it was sticky. 
I am scared and idk what to do I looked on google and some stay ( cause I had sex the night before ) he could have ripped someone or it could be a miscarriage. I don't even know :( PLEASE HELP ME