Firstly you havent knocked it or injured your pip. They are so low down its impossible at this stage so dont worry about that or blame yourself!
I googled too and couldnt find anything about egg abrasion, however if you google prescribing progesterone in pg there is some info. Some studies have shown that women who have underlying risk factors or had recurrent miscarriages have gone on to have a healthy pg when progesterone has been prescribed. However not all dr's prescribe it as some feel its not researched enough/have proven results. There is no harm in taking this supplement as it naturally occurs during pg, again however some dr's are over cautious and dont want to interfere.
Maybe in cyprus its more common to prescribe it. Please try not to worry hun, but I know you prob will. You are doing everything you can xxx