Hello, I Was Just Started On Prednisone And Levaquin For

Hello, I was just started on Prednisone and Levaquin for acute asthma/bronchitis. I take Omeprazole for GERD. First dose of Prednisone today and I am having horrible heartburn even though I took it with a meal. Is there an OTC med I can take to help with the heartburn? I'm not looking forward to six days of this. Thanks. Dawn