What Causes Red Vaginal Discharge With Stomach Pain?

hi, i am 28 years old my cycle is 26 days

i had a brownish disharge with pain on the left side at the day 14 of my cycle

then at the days 24, 25 and 26 i had a dark brownish spotting without pain but i was vomiting

todayis the day 27 i had too much pain in my stomach and went to the toilet then a small amount of red blood tissue went out of my vagina

am i ok? do you have any exlanation on what is going on with me and if it is normal??