Hi Gonzolina
I was on both. the Fs didn't prescribe the infolic- got it on my own.
Started it in CD11 of my cycle - no BFP that cycle but the following one, so the first full cycle of infolic got my BFP. Although not fully tested it claims to assist with egg quality. I would recommend it. It's usually recommended for PCOS and insulin resistance. I had neither - but am older so thought it would assist in egg quality.
Pre-seed - also highly recommended- it will help with the ph of the CM and is easier for the swimmers to get through.
Taking / using these is no guarantee of a BFP - TTC really is trial and error.
Good luck- you may even lose a bit of weight on infolic- I did.