5 failed transfers

Hi, we are devastated to report that we found out on Friday that our 5th FET failed. First try was a chemical pregnancy, then I had an ectopic pregnancy and had to have my right tube removed, then I had 3 separate transfers all negative. Please help. None of the drs have a clue why these aren’t working - all were genetically tested normal embryos. And now to make matters worse when I ovulate there is fluid appearing in my uterus - this started happening after the ectopic. They remove the fluid before the transfers but no one knows what it is or where coming from. Please help, send me any thoughts or hope. Thanks so much