Hi I Am Having Regular Periods Due To My Ovaries

Hi i am having regular periods due to my ovaries are not fuctioning properly and not releasing eggs how much is needed for my age. I am taking treatment for this but i am not getting any reponse. so doctor has suggested me to take injuction and ovares 75 sr. doctor is saying if this does not work we have to go for IVF test tube baby so pls suggest me what to do?i does not want to have a test tube baby i need a natural baby so pls guide me. thank you.I am 25 yrs old