Irregular Periods, Spotting & Negative Pregnancy Test: What to Do

If you've had months of amenorrhea (no periods), then spotting with a negative pregnancy test, repeat the test in 1 week if bleeding doesn't normalize.

Why This Happens

• Anovulatory cycles: No ovulation → no progesterone withdrawal → no orderly shedding → irregular/absent periods
• Breakthrough bleeding: Estrogen-driven endometrial buildup eventually sheds unpredictably
• Test timing: If recent intercourse, test may be too early. hCG doubles ~48 hrs; retesting catches rise.

Common Causes of Irregular Cycles

• PCOS (most common)
• Thyroid dysfunction (hypo/hyper)
• Hyperprolactinemia
• Weight change (gain/loss), excessive exercise
• Stress (HPA axis disruption)
• Perimenopause (if >40)
• Medications (antipsychotics, antidepressants, anticoagulants)

When to See an OB-GYN

• No period >90 days (or >6 months if previously irregular)
• Heavy/prolonged bleeding
• Pelvic pain
• Hirsutism, acne, weight gain (suggests PCOS)
• Trying to conceive >12 months (<6 months if >35)

Blood work (TSH, prolactin, FSH, LH, androgens, β-hCG) and ultrasound clarify diagnosis.