I ALWAYS get heightened sense of smell when I'm pregnant. In fact that's always my first symptom and once it happens I'm like "Time to pee on a stick." My prenatals give me food aversion IF I don't eat something small before I take them. First trimester I generally have sour stomach early in the mornings as well and will usually go away once I eat something.

ALERT!
Another cool thing about prenatals is the iron in them turns my bms green