How Should Acute Period Odor Be Treated?

Hi I am 32, never had a problem with my period before and this time around I am noticing a rather strong odor when I change my period. It does smell like an old tampon could have been left in-this has happened and I was able to get it. This time I have "searched for it" but don't feel anything. Could I be missing it? Could this period just have a foul odor? No odor before my period.