How much is too much bleeding and pain?

I found out on Thursday that I have an empty sac. By Saturday I started to lightly bleed with cramping, pelvic pain, and lower back pain. By Sunday the cramping worsened and that night I was bleeding heavily. Yesterday the pain was unbearable and I’m bleeding a lot. I see the doctor in a couple of hours. I’m hoping I’m just passing it myself naturally, but I still haven’t seen a huge clot or anything. Anyone else dealing with a lot of pain and blood?