Possibly pregnant after WLS

Good morning ladies! This may be a little long but please bear with me. I had my first child in 2008 at the age of 30. For about 5 years after that my husband and I tried to conceive another baby but were not able to. In October of 2017 I had the gastric sleeve performed and I've lost over 100 lbs. We have not been using any type of birth control because I was told by my OB/GYN that I would not be able to get pregnant. I decided to take a pregnancy test this morning because my breast are very tender and my last period was May 26-31. I believe I see a line but not sure if it's just my eyes playing tricks on me. I am 41 years old now and the thought of being pregnant terrifies me! Not only because of my age but also because of my WLS. I guess my question is, do you see a line and has anyone conceived after WLS and if so how was your experience?