Uncomfortable and needing advice!!!

This isn't the most glamorous of pregnancy questions (do they exist?), but I must ask because I am desperate. What can I take at 14 weeks that is safe that will help with constipation, pressure, bloating, indigestion? I feel like I'm six months pregnant in size because of this. Even the school nurse at my school asked me today when I was going to find out if I was carrying one or two babies. 😱 It's still a lot of my previous belly weight and I wasn't little to begin with by any means, but this has to be causing some of the problem. Did anyone go through this? I'm so uncomfortable and I have many more weeks ahead. Suggestions appreciated!