Mood swings relating to your period usually happen the week before rather than while on your period. Anyway it’s called PMS here are some symptoms...
“PMS differs from one woman to the next. The wide range of PMS symptoms can include:
abdominal bloating
acne
anxiety
clumsiness
confusion
depression and lowered mood, which may include suicidal thoughts
difficulties in concentration, memory lapses
digestive upsets, including constipation and diarrhoea
drop in self-esteem and confidence leading to social isolation
drop in sexual desire, or (occasionally) an increase
feelings of loneliness and paranoia
fluid retention
food cravings
headache and migraine
hot flushes or sweats
increased appetite
increased sensitivity to sounds, light and touch
irritability, including angry outbursts
mood swings, weepiness
sleep changes, including insomnia or excessive sleepiness
swollen and tender breasts.
There is treatment for it such as going on the pill. I would read up on it and try to do something about it. Feeling suicidal once a month isn’t great.
Here is a link
https://www.betterhealth.vic.gov.au/health/conditionsandtreatments/premenstrual-syndrome-pms