Tampons 😁

Anyone have trouble wearing tampons after vaginal delivery & didn't have a problem before? I'm currently 10 weeks pp & two weeks ago I got my first period, it's now been 2 weeks of bleeding 😡 but I am unable to wear tampons now. They feel like they are in incorrectly, and I know they aren't. It just hurts bad. I did not have stitches or tear bad. Anyone else having trouble or know why I would be? Sex didn't bother me. I'm confused, & hate pads!