Thanks for your query.
You have a cyst
in ovary and this can make your periods irregular and cause problem in conception(getting pregnant).
The basic needs to get pregnant are:-
-proper ovulation and rupture of follicle to release the egg
-patent fallopian tubes
-normal semen analysis
report of your husband.
Since you have a cyst you need proper follow up with your gynaecologist for 3 months as the cyst will disappear in this period.
Once the cyst disappears get yourself & your husband investigated to find out the cause.
Depending upon the report your Gynaecologist will give you medicines and hopefully you will get pregnant.
Hope this answer is helpful.
All the best.