how far along?!?!

Katie
Hello! I am pregnant! (YAY) but I'm freaking out because I don't know how far along I am. I have a one year old and did not get a period until she was 11 months old. I had a period on May 1 and it was totally normal. But then never got a 2nd period. Negative pregnancy tests on may 28 & June 1st... then a positive test on June 17th. My doctors office put me down for 7 to 8 weeks based on my last. But I'm wondering if I skipped a period due to breast-feeding? Has anyone else dealt with this before?