Being told you have “unexplained infertility” can feel incredibly frustrating.
You’ve had the tests.
You’ve done everything you’ve been told to do.
And yet—you’re still not pregnant and your told IVF is the only option. But if you don’t know what the problem is, IVF won’t help you find out the answer.
For many people, this is the point where confusion really sets in.
Because if everything is “normal”… why isn’t it working?
A Different Way to Look at “Unexplained”
In many cases, unexplained infertility doesn’t mean there is no cause.
It often means: not everything has been fully explored yet.
Fertility is complex. It’s not just about one hormone, one test, or one result—it’s about how multiple systems in the body are working together.
And sometimes, the more subtle pieces of the puzzle are the ones that get missed. Unexplained infertility isn’t the end of the road— it’s often the beginning of asking better questions.
Tests & Areas That Are Often Overlooked
1. Thyroid Antibodies (Not Just TSH)
Many people have had a basic thyroid test, usually measuring TSH test.
But this doesn’t always tell the full story.
Conditions like Hashimoto’s thyroiditis, caused by thyroid antibodies, can be present even when TSH levels are within the “normal” range.
Thyroid antibodies can:
- Affect hormone balance
- Disrupt metabolism
- Influence implantation
All without causing obvious symptoms.
2. Sperm DNA Fragmentation
A standard semen analysis looks at count, motility, and morphology.
But it doesn’t assess DNA quality.
Sperm DNA fragmentation can be indicated in low morpholgy rates and will:
- Impact fertilisation
- Affect embryo development
- Increase miscarriage risk
This is one of the most common “missing pieces” I see—especially when everything else appears normal.
3. Uterine & Vaginal Microbiome
The balance of bacteria within the reproductive tract plays a much bigger role than many people realise.
Imbalances can:
- Create inflammation
- Affect the uterine environment
- Reduce sperm survival and motility
- Interfere with implantation
- Affect oestrogen levels
- Cause recurrent pregnancy loss and autoimmune-related fertility issues
And importantly—these are often completely asymptomatic.
4. Chronic Low-Grade Infections
Not all infections cause obvious symptoms.
Low-grade or chronic inflammation—particularly within the uterus—can quietly affect fertility.
This may include:
- Endometrial inflammation
- Gut-related dysbiosis
Again, these are rarely picked up in standard testing.
5. Immune Factors
In some cases, the immune system may be playing a role.
An overactive or dysregulated immune response can:
- Interfere with implantation
- Affect early pregnancy development
- Cause miscarriages
These are usually only explored in more specialist settings.
6. Blood Flow to the Reproductive Organs
Good circulation to the ovaries and uterus is essential.
Blood flow supports:
- Egg development
- Endometrial thickness
- Implantation
But it’s not something that is routinely measured or discussed.
7. Luteal Phase Function
You may be ovulating—but what happens afterwards matters just as much.
Progesterone supports the endometrial lining and needs to:
- Rise at the right time
- Be sustained at the right level
If this part of the cycle isn’t functioning optimally, implantation can be affected.
⚖️ Why These Things Aren’t Always Picked Up
Fertility medicine is often designed to identify clear, treatable issues quickly.
When those aren’t found, the next step is often treatments like In vitro fertilisation, which can be incredibly helpful for many people.
However, this can sometimes mean that more subtle, underlying factors aren’t always fully explored first.
Ready to Look Deeper?
If you’ve been told everything is normal but you’re still not pregnant, my 90-minute fertility assessment is designed to uncover what may have been missed and give you a clear, personalised plan forward. I can tell you what tests you need and where to find them.
If you’re looking for fertility acupuncture support in St Albans, this is where we start.