Hello, Above features are mostly suggestive of late conception. You must undergo one blood test for beta-hCG to confirm your pregnancy status. Light brown spotting may indicate implantation bleeding. Other reasons are PMS, hormonal imbalance, pelvic or vaginal infection, stress/ anxiety, endometrial tissue, irregular diet habit etc. Here, you may need to undergo one pelvic ultrasound scan and hormone test to pinpoint the diagnosis in the absence of pregnancy. Treatment depends on underlying etiology. Consult with your gynecologist at the earliest for other relevant investigation if any. Avoid stress, take healthy diet, control body wt, maintain genital hygiene properly and take proper sleep. Be well & take care.