My ovulation date kept changing the more periods I entered. It originally stated that I ovulated on the 10th and was supposed to start my period yesterday. I entered more period info in and now it states that my period should start on the Tuesday. I’ve been testing every other day with first response and have only been getting negatives. Has anyone ever been pregnant and it didn’t pick it up yet? This will be our second baby and I have the same pregnancy symptoms that I had with the first ie: heightened sense of smell, nausea, vomiting, etc. is it possible I could still be pregnant?