16.6 Doctor couldn't find heartbeat??

Natalie
I stopped in at the doctor on my way home To have my blood pressure checked due to some feinting spells and she decided to check bubs heart beat on the Doppler. I have an anterior placenta and she tried for ages to find it but she could on get mine and the placenta whooshing. She had another doctor come in who couldn't locate it either. So I'm really really worried. My 20 week scan isn't happening until the 3rd of April. I know anterior can make it harder but they haven't had problems before now. I had my gender scan last week and he was moving around and they played his heartbeat nice and loud for us. I don't know what to think now. I'm so scared. I love this little man with my whole heart.