Husband doesn’t want to wear mask

With the mask mandates being lifted my husband refuses to wear a mask now. We aren’t vaccinated because we are trying to get pregnant and there isn’t much study on vaccinated pregnant women. I have told him that his health and also my health is important and I refuse to go out with him if he is not going to wear a mask. His response, “I’ll go by myself” I tried telling him that my main concern is the fact that we are trying to get pregnant and our health is priority. I need help.