Unsure how far I am!

Holly

My last normal period was Feb 1st. Then my next period was 7 days late... I only spotted 3 days(started Mar 7th). I have a doctors appt this Thursday bc the doctor is unsure how far I am. They don’t do sonograms at the office. Do you think he will send me to get blood work done and possibly a sonogram? I haven’t had a baby in 10yrs. I feel brand new at this. Any advice is greatly appreciated. Thanks ladies!