Confused..

The last day of my cycle was the 16th, I work as a nurse aide so I see and smell a lot of nasty stuff, today as I was changing a resident the smell got to me and made me gag. I know that the last time I was pregnant before I miscarried I had the same problem. Most of the time it doesn't bother me. Is it possible to be pregnant and just have some of the early symptoms?? I know it sounds stupid just a question.