Miscarriage?

[time4ababy]

I am 35 and I just found out I was pregnant last week. So I figure that I'm either 4 or 5 weeks pregnant. This is my fifth pregnancy. With my first pregnancy I was on bed rest for the last two months. My second pregnancy went okay with some preterm contractions and I delivered two weeks early. My third pregnancy I lost at 18 weeks (my only daughter). My water broke and I gave birth to her but she didn't survive. My fourth pregnancy was considered high risk. I was on progesterone shots every weeks after 20 weeks and my water broke at 35 weeks a week after they stopped giving me the shots. My son was in the NICU for a week but is healthy now. That was five years ago.
That brings me to this pregnancy. Like I said, it's very early in my pregnancy. I started spotting yesterday unexpectedly. I went to the ER because for my body, this is not normal during early pregnancy. However, maybe this is happening because of my age. The ER did both types of ultrasounds and did not find an embryo or yolk sac. They said that maybe this is because I'm so early or possibly because I'm experiencing a miscarriage. My Beta HCG level was 126 which the doctor said was low for me being 4 weeks pregnant. He told me to stay on bed rest for 5 days and to recheck my beta HCG levels again in 48 hours. I am going to the doctor tomorrow to have this done. The ER doctor was thinking that I was probably having a miscarriage. They were fairly confident that there was not an ectopic pregnancy.
Any thoughts on whether I'm definitely having a miscarriage or not? Or, if the HCG levels are way to low?

[erinbeth2]

I had an U/S at 5w4d and they found the embryo and then at 6w3d they found the yolk sac

[Nya86]

The HCG levels are low, however most doctors will not see a yolk sac or embryo until your about 8 weeks... My doctor didnt even want to do an sonogram before then because he knew he would not be able to see anything... its really a waiting game at this point... I'll keep my fingers crossed for you... good luck