Hcg? Help?

mr

So Thursday my hcg was 461 and 48 hours later they was 743. The dr was worried about the slow rise and because of all the pain in my left side. This morning I went for more bloods and my hcg was 2,029 and the pain is mainly concentrated in my lower abdomen. Its not necessarily pain now more like a ache and twinge every now and again? Does this sound like It’s getting better? I also have pcos and ovulated late and the doctors guess I’m about 4-5 weeks looking at my numbers. I also have my first ultrasound next Wednesday! What should I expect to see?