FHA is more flexible with credit scores than other types of loans, so depending on how low your scores are and what your other qualifications are maybe. Meet with a local full service lender and explore all your options. As long as FHA is an option for them, they can suggest that program or another which may be available.
One other thought, with low credit scores you may want to investigate some other steps. Many people with low scores benefit greatly from establishing a budget with reminders to make sure the bills get paid or if you had a single event which damaged your credit, doing some credit repair may be in order. Best of luck.