Trying to get pregnant

I was wondering if anyone has gone through this two months ago i had surgery to remove a cyst i had in my right ovary but ended up losing the ovary now im left with one. Last month dr did a ultrasound nd found out again i have another cyst but this one just has blood not a dermoid cyst like before. Now my question is does anyone know how likely it is for me to get pregnant. Me and my boyfriend dont use condoms at all nd no luck getting pregnant. :(