Pregnant

Don't be scared! I had the same, and a week later there was baby! I'm now 10w and baby is doing great. 

5 weeks is very early to see anything, many Drs will hold off ultrasounds until after 7 weeks to not cause unnecessary stress for mum.  There is so much development every day in early pregnancy.  Many women don't see a heartbeat until after 6 weeks.  I know it must be really hard not to worry, but it's very possible everything is fine and in 1-2 weeks you'll see your baby :-)