Thanks for your query.Based on the facts that you have posted it appears that you have Epididymal cyst
of a size of 1 cm.It is benign in nature.
One has to just observe it ,normally no treatment is required however may need to get excised if it increase in size or becomes painful.
Do not worry It will not affect fertility
of your husband .
As regards pregnancy
consult your Gynaecologist for clinical assessment and treatment (if required)
Get semen analysis
of your husband done to find out sperm count
and morphology of the sperms.to have effective fertilization of egg