Hello and welcome along

Glad you took the plunge and posted too

I too have had a good read around over the years with specific interest in the MTX and fertility debate....similar questions have been asked before, and quite understandably too!
I didn't come up with very much more than you did...probably because there is very little research out there on it?
But I do know there are many members here who have either fathered or mothered babies after using MTX after the three month wash out period...and they have all been healthy, happy babes! It isn't so much what the MTX does to fertility whilst you are taking it (it apparently doesn't affect it), but what it can do to the unborn child...because it affects cell structure, littleuns being a mass of cells at conception can have them jiggled around in a not nice way!
I have read that MTX is safely out of the body completely after three months, which is why women are told not to get pregnant until this point...
MTX has been used for P/PA for nearly 30 years...I believe if there was any question of problems with fertility in this period, a doc would have seized the opportunity for a study...
At this point in time, when you are suffering so much and wanting to be an active father for your son/daughter, and there isn't anything else out there for you to try...is it worth giving it a go to see if it can help the quality of your life (and that of you family)?
There are many, many threads on MTX on the boards and it is worth doing a search and looking at people's experiences with it before you make any kind of decision methinks...
SJ