About a week and a half ago I had some very light spotting and got concerned. So I ended up going to the emergency room because it hadn't stopped after 24 hours. When I was in the ER they took my beta HCG levels. They were only 200. When I had them taken again 4 days later they were 800 and yesterday (5 days later) they were 8600. Is it possible that I'm having twins??