Maybe a silly question?

Has any cup user here gotten pregnant or had issues TTC while using a cup just for their period? I use a menstrual Disc./cup and have just wondered if other women have had any issues with TTC related to the usage of a cup. I start early in my period, I use my cup as soon as I start to spot a few days before my period is due. I don't see much reason to believe it could cause a problem but ya never know? I am also a living evidence that implantation bleeding is real from a previous pregnancy and this is why I worry. Back then I used tampons though.

Again, I am not talking about using a menstrual cup to get pregnant method. Just if using a menstrual cup has effected your fertility in some way at all?