Pregnancy tummy???

Iv been TTC for almost 3 morons now and I'm on the skinny side but I have noticed recently that my tummy is a little chubby the past few days it was yesterday before I even ate anything which I did around 2 was the first time I ate. I have also gained about 5 lbs also. Have any of you ladies experienced this and realized you had a little weight gain and a little tummy before you got pregnant?