Bleeding 6 days before planned FET

[Someday_Bluesky]

I was meant to start progesterone tonight in preparation for a FET Tuesday but I’ve just started bleeding and passed a few large clots. I’ll call the clinic tomorrow for advice on next steps but obviously this FET will now be cancelled (I’ll still continue meds until told otherwise). I’m just keen to understand why this happened so I can prevent it happening again. Anyone else experienced this?

For a bit of background, I was lucky enough to have a successful pregnancy from a FET a few years ago, this is my first attempt trying for a sibling. I had a lot of issues with thin lining in my previous FET, ended up increasing estradiol to 10mg and introducing patches. My lining still only just got to 7mm and we transferred really late in the cycle (something like CD32). This time we started on 10mg estradiol and patches and at my first tracking scan (Tuesday) my lining was 8.4mm. Great, I thought! Now I’m wondering if my lining got too thick.

Is that a thing? Before my successful FET I had a fresh transfer that successfully implanted but I sadly lost at 8 weeks. My lining only got to 7.4mm this cycle so maybe I overdid the oestrogen and 7mm lining is just normal for me.

I’d appreciate any thoughts, thank you!

[Twiglet2]

I’m so sorry you got so close and then this happened! Under 9mm is defo not ‘too thick’ I’ve had up to 15mm before and being too thick wouldnt cause you too bleed early in your cycle I don’t think 🤔 You may have had a drop in your hormones though so be interesting to see what your clinic say, they may even do a blood test to see what’s going on, thinking of you xx

[K_LNB]

It might simply be the IVF messing up your hormones. I have regular cycles but following IVF had a cycle of 6 weeks, then went for planned FET on next cycle … had scan at day 7 to check lining etc. and told to come back in a few days… at which point I’d come on my period on something like day 12! Basically cycle length just all over the shop! Incidentally it resolved itself the next month and FET went ahead.

[Doodlebug23]

I had this and a cancelled FET as a result. My clinic just said unexplained bleeding. Only happened to me once but then after that I felt added anxiety it would happen again.