Ultrasound

My first ultrasound was this afternoon, I'm 5w2d today.  Just one sac (thank goodness!  No offense to my dear moms of multiples).  HCG shot up from 1211 to 3297 in 48 hours.  They couldn't see the yolk sac but hopefully next time.  I'm still not feeling many symptoms other than being extra tired and not wanting to drink coffee (that makes it easier to give up the caffeine, I'm a bit of a coffee addict).  I'm still not fully excited about this pregnancy, I need to see the heartbeat to be a little reassured.