I feel like an elephant

So I am getting closer to 5 months along and Im huge, I officially feel like I have an octopus inside of me :D lol (sorry about the reference there. I guess its not better than how they compare the pregnancies to food sizes lol) Part of the reason I am off work.
I understand yes this is my 2nd pregnancy, but the doctor says that I am measuring bigger my last ultrasound he made the comment of he thinks the one baby was hiding behind one another because one sac overlaps the other sac by like three quarters of the way. They believe they picked up two heartbeats at my appt in December and cant wait til the ultrasound in February to find.
Although it could be exciting still scary at the same time especially with our age. Thank goodness my daughter is potty trained.