Help!!

Chelsea • Married. Nurse. 2 yr old boy. Second boy due 7/6/16 ❤️
I'm 7weeks preggo today. About 2-3 weeks ago my doc put me on Progesterone because my levels weren't quite as high as they should've been. I will get to stop taking them at 10-12 weeks depending on my levels. Well between that and my prenatal(contains iron), I am SOOO constipated! I've been taking a softener once a day but I'm too nervous to take an actual laxative. Any advice on home remedies that have worked for any of you momma's?! In willing to try almost anything!
Thanks in advance!