Suggest Remedy For Ear Ache And Wax Buildup

I have a problem with my left ear. I feel a lot of pressure like wax is pushing against my ear drum. It hurts even more when I burp. I feel like the only way to make it better is to remove the wax which I cant as I wouldnt stick anything in my ear drum. The pain is getting to be unbearable as I cant take painkillers as im breastfeeding. Is there anything else I can do? Thank you