Infections

I lost my virginity last September to my boyfriend and I've made love with him and only him. Throughout the course of our sexual relationship I've become highly prone to mild yeast infections. It's very irrating and took me months to finally confess to my boyfriend what has been happening. I clean myself before and after sex most of the time, we both have been tested and have zero std's. Prior to losing my virginity I had never used tampons, vibrators, toys or inserted my fingers into my vagina. Is there any home remedies for this. I'm in no positions to buy medication