Thin lining and Neupogen wash

[Harbut]

I would like to find out if any one has had a success with neupogen wash? I am in the part way through an FET cycle, but a scan has shown my lining is too thin at only 6mm at day 12. I have started on viagra and the clinic has suggested a Neupogen wash 48 hours (day 18) prior to transfer (day 21) but as the clinic is abroad this means travelling earlier and staying longer.

1. Is there anywhere I could get a Neupogen wash done in London at short notice?

2. Does anyone think Neupogen wash works to help increase lining thickness and receptivity?

Many thanks for your help. Any advice much appreciated.