Cystic glandular hyperplasia of endometrium means there is an excess of the hormone oestrogen and therefore a relative shortage of the hormone progesterone, which is needed for ovulation and subsequent fertilisation of the ovum. So this excess of oestrogen hormone can be responsible for infertility. The cause of this should be investigated by a gynaecologist and in your case endometriosis needs to be excluded. Hyperplasia of endometrium is generally treated by progesterone and curettage of endometrium. A gynaecology consultation is necessary.