Can the doctor tell it’s twins through blood?


I had my first appointment today and I got my blood drawn and set with everything. My next appointment will be on the 19th and they’ll listen for a heartbeat and check my cervix. And they’ll schedule a ultrasound that day, but won’t get get one that day. I just have a hunch it’s twins, they run in both me and my husbands family and no one has had been for a hot minute on either side. I know that doesn’t really appreciate mean anything, but I really just have a feeling.