Abortion Scheduled

I’m scheduled for my surgical abortion next Saturday morning.. I was on the Mirena and it fell out due to my tilted uterus.. I had no clue until I found out I was pregnant. This obviously wasn’t planned and we are NOWHERE near ready for a 4th child. Looking for others experiences and uplifting words of encouragement. How long does the whole process take? Any pain after? Were you put to sleep? I was totally against abortion, except for a few circumstances, and never ever thought I’d be in this position. I have a 6 month old and a 3 year old as well..