Ovulation irregularity

Using an ovulation-monitoring tool to know the accurate time when you are ovulating will help you pinpoint when you are most fertile. For the best chance of pregnancy, it is best to have sex on the days you are ovulating and the day after.

Diabetes

Research shows that women diagnosed with diabetes and who maintain poor blood sugar and insulin levels, are four to six times more likely to give birth to babies who have birth defects. Consult your doctor for a diabetes screening, eat an appropriate diet, and closely monitor blood sugar and insulin levels if necessary.

Chemicals and terrible diet habits

To increase female fertility, minimize and eliminate toxins in the body by avoiding artificial sweeteners, caffeine, alcohol and other chemicals. Eat a balanced diet consisting of organic, nutrient-rich foods such as fruits, vegetables and lean proteins.

High impact exercise

Women who exercise excessively decrease their chances of pregnancy as over-exercising negatively impacts ovulation and fertility. If you are currently in a strong workout regiment, switch to low intensity exercises such as swimming, yoga, and walking.

Health issues

Fertility diseases such as Endometriosis, Polycystic Ovary Syndrome (PCOS) and Primary Ovary Insufficiency (POI) are the common issues that influence female fertility. If you doubt you have any health conditions, do not take home remedies and ask online opinions. Go see a doctor to see if there’s any further treatments needed.


Resources:
http://www.completefertility.co.uk/causes_of_infertility.php
http://fcionline.com/fertility-resources/blog/10-ways-to-increase-male-and-female-fertility
http://www.hfea.gov.uk/infertility.html
https://www.nichd.nih.gov/health/topics/infertility/conditioninfo/Pages/health-factors.aspx