I'm not sure when I ovulated and my periods are irregual but I got a faint poss last Thursday and over the weekend clearblue digital 2-3 weeks pregnant... Had scan today but they couldn't see anything and think I'm early... Took blood and they foned with results and my hcg is 500 and something... Got repeat in 48 hours... Would u expect to see something on a scan with that much hcg?