I use condoms and still get BV or yeast infections but when I don't use them I get them as well? What good will it be to have my partner checked?

Have them checked. You and your partner should be treated together. Some causes for yeast infection include: antibiotic use, pregnancy, uncontrolled diabetes, impaired immune system, anything that changes the type and amount of bacteria normally present in the vagina, such as douching or irritation from inadequate vaginal lubrication.