Please help

Last night I experience bleeding during intercourse. This is never happened to me before I have a two-year-old son and I’m trying to conceive baby number two. We were having sex until he looked down and noticed that I was bleeding really bad my period is not supposed to start until the seventh of next month so I know it’s not my period. I’m also having a lot of cramping pain today and experience in blood clots. Could someone please maybe tell me what’s going on..I also had an early pregnancy loss last cycle.