I bought a home fertility test from first response and it says that it MUST be taken on day three of your period. But I don't have regular periods. Is there any way I can tell when day 3 of my cycle is?

First, here is some info from

First, here is some info from the First Response site about the test:

If your ovarian reserve (eggs) is low in quantity or quality, your pituitary will produce higher than normal FSH levels early in the cycle, trying to stimulate your ovaries to produce a mature egg. In other words, when your quantity or quality of eggs (fertility potential) is low, your FSH level may be high.
Therefore, knowing your FSH level on Day 3 of the menstrual cycle can be helpful in finding out if you are able to get pregnant.
FSH level assesses ovarian reserve, one of the leading single indicators of a woman’s fertility potential and now it is possible to gauge your fertility potential through a simple at-home test with over 95% accuracy.

Now,as you said, the test is supposed to be performed on day 3 of your period. The only way to have a day 3 of your cycle is to start your period. If your cycles aren't regular and you aren't having a period, this is a problem. The test isn't going to work for you unless you start.

You are concerned about your fertility, and a good rule of thumb is this - woman of any age who do not have menstrual periods or have irregular periods need to see their doctor.

Good luck!


The information provided on ConceivingConcepts.com is designed to support, not replace, the relationship that exists between a patient/site visitor and his/her health professional. This information is solely for informational and educational purposes. The publication of this information does not constitute the practice of medicine, and this information does not replace the advice of your physician or other health care provider. Neither the owners or employees of ConceivingConcepts.com nor the author(s) of site content take responsibility for any possible consequences from any treatment, procedure, exercise, dietary modification, action or application of medication which results from reading this site. Always speak with your primary health care provider before engaging in any form of self treatment. See our Legal Statement for more details.

Fertility Clinics Directory

Find a Fertility Clinic

If you or a loved one is suffering from infertility and needs help conceiving then we are here to offer help in any way we can. We have over 450 Fertility Clinics listed on our Directory. Click here to search for a Fertility Clinic that is right for you.