When you ask "hide it" - are you referring to what you wear? No - you wear the professional suit which looks the very best on you. For you, it will be unfortunate since you'll probably not wear this suit much again unless you interview during another pregnancy.....but, kids are expensive. This is just one more expense. In choosing the suit you interview in, the rule applies to anyone - big, small, male, female, tall, short - wear the suit which looks best on you.
Your interviewer cannot ask you about your pregnancy legally & I'm pretty sure no one will. I would advise you not bringing it up since has nothing to do with your abilities to attend school (you should have your obligations thought about & covered) nor your desire to become a good pharmacist. It is obviously a personal happiness of yours, but this is not the time nor place to share it with someone who has the ability to decide your future. Keep on the topic of pharmacy - not because you are "hiding" but because that is what the interview is about.
Your "condition" is temporary, although your life change of becoming a parent is permanent. This is no different from someone who has an artifical leg or a mental illness (both of which exist in some medical & or pharmacy school classses I'm personally familiar with). They are irrelevant to becoming a pharmacist or a physician. Your contribution toward your interview should stay on topic of how much you can & want to contribute to pharmacy as a profession and how well attending this school will allow you to learn the skills to help you do that.
Good luck!
