Glad to hear they are working together, helps if you don't have to be the go between of them, no extra stress needed.
Sorry to hear about your 3 miscarriages, totally get why you want to do everything you can before transferring another. May I ask what grades you have had and have they all thawed well? Also did they freeze all of yours or some not get frozen due to grades? I ask this as I spoke with the embryologist today who was polite but think she wanted to set fair expectations about drop off, but really it just worried me a little to the point of thinking if there is something on day 3 I'm getting it back inside asap, whether it's a polyp or not, but know my thoughts may chance on that. It felt like she was telling me that getting things to a good enough level to freeze is hard, I don't want false hope but it defo felt gloomy.
The increased Estrogen levels from the stims can cause the polyp to grow, once that stops and hormone levels calm off the body can reabsorb it. A polyp can cause inflammation which is when it can lead to a miscarriage unfortunately. Been reading some studies and for some clinics anything under 1.5cms they don't see as a concern. I think placement is important, where yours is, sound very similar to mine and the pics looks similar. I will ask more about the placement of mine tomorrow as my original clinic made it sound like it was right at the opening of fallopian tube which is why for IUI it would limit the sperm and egg reaching. I feel like any egg that implants that far across anyway is possible risk of biochemical or growing in a bad stop to block the tube, which obviously is dangerous and cannot be moved, not saying that to scare, more that as you say, what's the chances of it implanting there!
I was with Care Fertility just as they took over a NHS Fertility department, lots of teething problems from the change over, felt they over promised and undersold and and some of the staff were cold, didn't have time for me and didn't provide any guidance re sperm donors, which is a massive decision when you have never had to look at it before - just given links to sperm banks, told what motile and it have to be an ID known and off you go. After my IUIs I would lie there for a bit in recovery and hear them speaking nicely and so reassuringly to the women who were coming round from IVF, offer biscuits/tea/saying how well they did and noone even checked on me once! I get IUI isn't the same but as a single person a polite hello and a bit of reassurance or offer of a cuppa would be nice, instead I was sent out with a paper leaflet and told to test in 14 days. When I started to bleed on day 9 after my first IUI and naively was hopeful that it was implantation bleeding the nurse on the emergency lines reply was "sounds like it's failed, no way of knowing, take a test tomorrow and callback with the result"...I wasn't prepared that I wouldn't make it to test day and it devastated me. Each month the IUI cost increased, the final one was close to double what I was originally quoted when it was the NHS place (if it was just the cost I would be okay about it). I just felt I was having to advocate for myself every step of the way and that's hard when it's professionals that know more than you.
Anyways sorry that was a long reply 😂 I have done my trigger shot so will just have to see what Friday afternoon brings.
I hope your appointment on Friday goes well and they get to the bottom of it for you, and some very clear pics to know what is and isn't there.