Why I am writing this
I also run a luxury travel business with its own significant ad spend. Two very different businesses, same lead-tracking problem, and nothing on the market solved it properly out of the box. So I built Tagless. This article is what I wish someone had handed me when I started running paid spend in fertility.
The fertility patient journey is not a checkout
Fertility patients do not convert on the first click. They research clinics for weeks or months. They click multiple ads, read success stories, compare pricing, and eventually reach out, often through WhatsApp for a discreet, private first conversation.
The gap between first click and first enquiry can be weeks. The gap between first enquiry and booked treatment can be months. Standard conversion tracking loses the thread long before the patient commits, which means Google Ads has no idea which campaigns are actually generating treatments.
Why WhatsApp dominates fertility enquiries
Fertility is deeply personal. Many patients prefer WhatsApp over phone calls or contact forms because it feels more private, less committal, and allows them to ask sensitive questions at their own pace. In markets like Turkey, Cyprus, India, and the UAE, WhatsApp is often the primary enquiry channel for international patients.
If your conversion tracking only counts form submissions, you are missing the majority of your patient pipeline. And if you only count WhatsApp icon clicks (the standard GTM approach), you are counting competitors, recruiters, and accidental taps as if they were real enquiries. Neither approach gives Google Ads anything useful to learn from.
90-day attribution for long cycles
Tagless maintains the link between ad click and patient enquiry for 90 days. A patient who clicks your ad in January and sends a WhatsApp message in March still credits the right campaign. When they book treatment in April, you can update the conversion value.
This matters enormously for IVF clinics where treatment packages run £3,000-£10,000+. Knowing that a specific Google Ads campaign generated £200,000 in booked treatments over six months changes how you allocate budget. You stop optimising for cheap clicks and start optimising for treatments.
Consent is not optional in fertility
UK, EU, and increasingly other jurisdictions require explicit consent before tracking. Most clinics bolt on a cookie banner platform on top of GTM and assume the job is done. It usually is not.
The trap: even when conversions are firing, they need the right consent signal attached to be usable for audience building in Google Ads. Get this wrong (most setups do, by default) and your conversions count for measurement but not for lookalikes or PMax audience expansion. You end up paying for an ad account that cannot learn from its own wins.
Tagless handles consent end to end: banner where needed, signal attached to every conversion sent to Google, so audience-building works as intended.
Multi-channel, multi-language
Fertility clinics often serve international patients across multiple languages. Tagless tracks enquiries regardless of channel or language: WhatsApp messages in Arabic, email enquiries in English, form submissions in Turkish. Every touchpoint, every language, one dashboard.
What you need for any of this to work
For a fertility clinic running serious ad spend, the tracking stack needs to do five things:
- Capture the GCLID when a patient clicks your ad and hold it for 90 days
- Track the enquiry where it actually happens (WhatsApp, email, form), not just the icon click
- Verify a real conversation took place before logging a conversion (otherwise PMax fills the funnel with junk)
- Attach the consent signal server-side so conversions are audience-building eligible
- Sync booking value back when the treatment is confirmed, so Smart Bidding can run tROAS
This is what Tagless does, end to end. One script. No GTM. No separate cookie banner project. Set up in 2 minutes.