This can be common for many mothers (to-be). In designing our multi-vitamin, due to the amount of each nutrient, we had to divide the dosage across 3 capsules, to be taken all at once, or spread throughout the day. As a benefit, dividing the capsules into 3 means that each one is smaller than what a standard size might be, which may or may not be easier for you to swallow.
If you know that you still might have an issue, another benefit of our capsule format is that they can be pulled apart. Doing so, the powder inside each can be poured out and added to oatmeal, a smoothie, or your morning yogourt. Taken in powder form, most mothers (to-be) should have no issue, even on their worse mornings.