I seem to have same prob :-/
I have had many tests and they say I have a few minor probs but nothing really to stop me getting a healthy pg.
After it I have either had chemical pgs (only a few) or bfns and it's been over 2yrs now.
They say my lining is fine though but I think it's strange as I had no problems ttc before it.
Now moving onto ivf.
I hope it resolves itself for you xoxo