I know I shouldn't worry because I'm only 10w 4d, but I just got my doppler last night and I can't find my little ones HB. I did it with a full bladder and I can hear my HB and other noises, but no galloping horses or anything faster than my own. I know its early, but I'm just a bit concerned because yesterday it seems like my boobs have shrunk in size. They are still tender, but only if I poke them (they usually hurt all the time). It's the only symptom I've really had this time around, so now that its gone I'm worried. I just got my scan date yesterday and it's not until I am 14.5 weeks! I'll never last that long. A lot of people on here have found the HB at 10 weeks recently. Do you have any tips on using the doppler. Did it take you awhile to find it? I've tried 4 times for about 5-10 minutes each.