As everyone else has said talking to a doctor seems a good next step just rule out anything nasty.

I was shocked to learn that my gums bleeding was hormonal. I had always been told that it was a sign of gum disease so at my last visit I spoke to him about occasionally noticing my gums would bleed not only when I brush but also when eating especially soft food such as bread. He told me he suspected it was to do with the normal hormone changes that occur around my menstruation but to keep a note and he was correct it coincides with my cycle.

That's definitely something they didn't teach me in biology