Clomid question

Hey! So I just took my last clomid last night. I took it cycle day 5-9. I went in this morning for an ultrasound and blood work and I believe she saw several maturing follicles but the biggest was only at 8mm. Today would be day 10 of my cycle. If I ovulate naturally it isn’t till about day 18. Is this normal to see at this point? I was only on 50mg of clomid. She is going to call me later with my blood work results and then most likely schedule another scan for Monday morning and possibly take a few more days of clomid.