Hello Since you are having these symptoms for 2 days , so there is no need of any tests . When such patient visit I prescribe them to take pantoprazole-d once or twice in day for 2-3 days . When patient have constipation , they usually suffer with flatulence ,so for this take laxative ( one dose of 30 ml will be sufficient . If these symptoms recurs then consult a physician and get his opinion. Now about scanty menses , amenorrhea , irregular menses , however these symptoms are very common among young child bearing age group , possibilities may be , these include; 1 PCOS , this is most common cause , diagnosis can be confirmed by ultrasound of both ovaries . 2 Tension or anxiety is another reason of such symptoms. 3 Hormonal imbalance , diagnosis can be confirmed by blood examination for FSH/LH , andogen . In my opinion for menses , consult a gynecologist and get his opinion. Good luck.