honestly no...

you are still having post partum bleeding, not technically AF. You need to give your body time to heal and introducing tampons too early puts you at great risk of infection.

Unfortunately you need to ride this one out, after you finish bleeding you will be safe to use a tampon for your next cycle.

If its not too heavy why not try the super pantie liners instead of the big maternity pads, you might have to change more frequently but they are alot more comfortably