vagina during period

okay, not to be tmi but when I'm on my period tampons are sometimes difficult to put up, like it feels uncomfortable and sometimes hurts a bit and then I end up trying to put a new tampon in successfully or just use pads. But today I wanted to check if I forgot a tampon up there earlier so I stuck in index finger in and I didn't necessarily feel a tampon so I think I'm good, but my vagina walls feel really swollen and tight and round and puffy It's hard to explain but am I the only one??