Blood Clot

Is this size of a blood clot normal? I started my period two days before my scheduled cycle (I have had unprotected sex but not during time of ovulation)I felt pain in my lower back along with cramps. As soon as I stood up I started to feel it wanting to pass so I ran to the bathroom. I passed two large clots along with 3 nickel sized clots minutes after the first two large ones.I haven’t passed another clot since this afternoon and my flow is no longer heavy. This was my “wipe” about 4 hours after passing the clots. I apologize for the pictures I know it’s TMI but I wanted to see if this normal for others.