I would count Feb. 17th as your LMP and calculate your due date from there. It sounds like a regular, normal period. Especially because you didn't get a positive until recently I'm pretty certain you're probably about 4 weeks pregnant.
I put your LMP into a due date calculator, assuming you have 28 day cycles, and it says you are 4 weeks 2 days pregnatn and due November 25th. Congrats on your Thanksgiving Turkey!
Ultrasounds this early are usually given to women who are considered high risk, have abnormal bleeding or other concerns (such as multiple miscarriages or a particularly difficult pregnancy in the past). Otherwise you won't get an U/S until around week 20.
thank you for the help :) i'm just excited to see it