Last week my menstration is delayed 5 days but before that I suffered a severe pain in my stomach , pain in my back and lower right abdomen wherein I can t sleep every night, this is my first time to be delayed but this week I got my menstrual period but it is 5 days now and still I have a brownish discharge usually I just have 3 days period...now I m still suffering in my lower abdomen, it s bloated, heartburn, pain in my back..is this is just an acid reflux?