Well, we are 16 days after our LH surge and we found out today that our betas are indeed rising. In fact, it was 830 this morning. Check out what the chart for day 16 says above! Yikes! Doctor says he has seen high numbers result in singletons and vice versa, so not to jump to conclusions. But- that directionally it does suggest potential multiples. We scheduled our first ultrasound a week from Wednesday (the 25th). We should know more then!!