I Have Been Having Constipation Since Starting Protonix 40 MG

I have been having constipation since starting Protonix 40 MG once a day and taking a few Zofran tablets due to nausea. I have been on the Protonix for 14 days and have been constipated for 4 days now. My doctor has not called me back and I need to know what otc medicine I can take to get some relief. I did take probiotics the last 2 days with no results.