Tampon lost?

Ok I might’ve just forgot but basically I put one in after my shower this morning and then took it out right before my bf came over. I meant to put another one in and I can’t remember if I did or not?? because it’s nighttime now and I went to go change and I didn’t see a string, even put my finger in there and couldn’t feel it. I put another tampon in. im just a little scared. I probably just forgot but im paranoid that it somehow got lost in there??? idk how that’s even possible. please help.