¿¿¿confused/worried???

my husband and i have had

<a href="https://glowing.com/glow-fertility-program">IVF</a>

treatment we've just finished our 4th go. we got a bfp which is great and we couldn't have been happier I'm about "5 weeks" last Saturday I had started to bleed and have done since it's changed colours (pink red and brown) sometimes it's barely there sometimes it's heavy enough to go on a pad. We've been testing most mornings and had positive but the lines are getting fainter. We've called the

<a href="https://glowing.com/glow-fertility-program">IVF</a>

clinic but they just keep telling us it can be normal and to test in a few days if we're worried book a blood test at the gp so we call them they tell us to call the early pregnancy unit at the but hospital but then they tell us it's ok but to keep an eye on it. I know I no longer feel pregnant but no-one wants to know.has anyone gone through this and had a healthy baby?