Hi Daisie,
I did lots of sneaking
and am very guilty of self medicating, but this was rather further down the track than you currently are (I did 10 cycles and 7 ETs). From what I remember of my googling days, low dose aspririn is quite common as treatment for fertility issues, even if you haven't tested specifically positive to any particular immunological or genetic issues. I think FSs in the UK are quite pro low dose aspirin. But it is up to you. I guess you have to way up the chance of you simply needing one or two more transfers ( and that is all some need) to get you BFP, versus the possibility that aspirin will make a difference and get you your BFP sooner, I hope this makes sense. I do think it is worth discussing in detail with your FS, and keep in mind some FS are pro or anti it as a rule so depends on what yours thinks. GL and wishing you all the best. xx