Answer:
MHM means "Menstrual Hygiene Management." It also means "Yes." Here is a little more information about each of these definitions of MHM.
Mhm is a version of mm-hmm, an interjection variously used to express agreement or make an acknowledgment, among other senses. Mhm is especially common in the casual writing of the internet and text-messaging.
Hmmm... i would be, el esta escribiendo