I'm on my period and a gush of blood came and im bleeding really heavy?

Variety of options . The cause of the heavy periods is not something we can always answer. There are lots of treatment options you can discuss with your doctor. Lysteda is a nonhormone medication designed for heavy periods. Some benefit from birth control pills, patch or nuvaring. Mirena (levonorgestrel) iud can stop your period in some cases. Consider an endometrial ablation if you are done having children.
How much bleeding? "gushing" of blood can be common with menstrual cycles.. If you are bleeding heavier than usual, and soaking through more than 1 pad an hour, you need to be seen in the emergency room for evaluation. Otherwise, if the menstrual cycle does not lighten up on its own in several days, see your gynecologist.
You have options. Abnormal periods need evaluation; sonogram, lab tests. Non-surgical options include: birth control pills. Lysteda (non-hormonal rx taken during period), Mirena (levonorgestrel) iud. Minimally invasive options: endometrial ablation (in-office), hysteroscopy polyp removal or fibroid resection; and only if these treatments fail then consider hysterectomy - vaginal or laparoscopic if possible.