Solitary Pulmonary Nodule

[venacava1214]

About a month ago I had an MRI to see if I had any damage to my spine due to a car accident. My back was fine but the results of the MRI said that I had a 2mm spot that could either be a solitary lung nodule in my lower right lobe or a spot in my liver, I guess the radioligist couldnt exactly see where or what it was. I was a light smoker for 7 years(about 2-5 cigarettes a day) so I was a bit worried. My doctor scheduled me for a CT scan and said I would need a followup CT later down the road to check for any change in size. When I researched the CT scan and found out how high the radiation exposure is from a Chest CT, I got scared and canceled the CT. I am 32 years old and am trying to get pregnant and the idea of exposing myself to that much radiation for something so small that may or may not be in my lung seems illogical. I also know that people that lived in the Ohio river valley have higher chances of benign lung nodules especially if they worked on a farm, which I did. My questions are I am being silly by not getting CT scan, should I just get one? Does anyone know if are there any alternatives to see if this 2mm nodule is even there and if it is in my lung or liver?