Hello, Here, you should undergo one home pregnancy test at the earliest and blood test for beta-HCG to confirm pregnancy. Above clinical feature is mostly corresponded with early sign of pregnancy. In exclusion of pregnancy, you need to undergo urine examination- routine & microscopy to exclude urinary infection. Proper antibiotic treatment may alleviate your presenting symptoms. Other relevant investigation of delayed period may need to carry out after consultation with gynecologist. Take healthy diet with iron & vitamin supplements, drink plenty of water, maintain genital hygiene properly and take sound sleep. Be well.