7 weeks pregnant.

Extremely nervous for my ultrasound on the 30th. I have subcronic hemorrhage bleeding. I'm supposed to be 7 weeks and like 4 days. My last ultrasound was 2 weeks ago on Wednesday and they saw a yolk sac. I'm really hoping a little healthy baby is growing and this hemorrhage bleeding will go away and not get worse. I really want a little boy. I have a little girl, 10 months on the 28th.