At 3 weeks 4 days hcg. Was 13

So I don't know what to expect I'm cramping period due today found out last week with 3 positive tests and a positive blood test the nurse made it sound like it wasn't viable I hate that word let's bring u in on Monday and take a blood test to see if it's a viable pregnancy I'm so scared I'm gonna get my period cause that's how she made it sound so today I'm really going through it worrying af will show anyone had this happen any advice ? This is my test progress starting at 9 dpo on the right to 12 dpo yesterday on the left