Need some help still no period two days left in month and negative test so i dont know what to think i m late?

my last period was on may 23rd on june 9th i had a light pink mucus and tiny drops of blood on my toilet paper it lasted like 5 hours. before and after that i also had cramps. i took several fr HTP and all have been negative!!! now i know i am late i did have cramping the last few days buy it seemed a little stronger and only lasted a few hours i have this awful gas that sometimes i have to let out it smells so nasty ( i eat the same way) my boobs feel bigger and fuller not sore. Im just scared!!!!!!!!!!!!!!!!