Advice - early preg bleeding

Hello, I’m not sure if this is the right forum to post in but I’m at a complete loss and need some advice.

My husband and I have been trying for a baby for 3 years and I’ve been taking letrozole.

I’ve had 3 positive pregnancy tests the last 3 days getting darker by the day. I started spotting yesterday and it’s gotten heavier today - like a proper bleed but the test darker than yesterday.

I have had chemical pregnancies in the past but the test is negative by the next day so this is very different. I have emailed my fertility consultant and spoken to my gp both have said nothing can be done, as they will not be able to see anything on a scan at 4wks 5days (ish), but to keep an eye on bleeding.

Has anyone else experienced this and still had a successful pregnancy? I feel like I’m so close to finally having a family and the rug is being pulled from underneath me 😢