Sure, you can feel nauseated at any time in pregnancy. I had morning sickness from 4 weeks until I gave birth at 39 weeks. The flu may also be going around, so it could be that, or a number of things. Just watch your symptoms closely and if you think it's something else let your birth provider know.

Some women do experience nausea throughout pregnancy. If you did not have this symptom and suddenly became nauseated again, it is possible you may have a virus, or are having nausea from some cause not related to pregnancy. If it continues, let your health care provider know.