Thyroid Symptoms in Women: What to Watch For
Underactive thyroid symptoms include fatigue, weight gain, cold sensitivity, dry skin, hair thinning, low mood, and heavy periods. Overactive thyroid symptoms include anxiety, weight loss, a racing heart, heat sensitivity, tremor, and light or missing periods. Because symptoms overlap with many things, a blood test is the way to know.
Underactive vs overactive
The two conditions often cause opposite symptoms, which is a useful clue.
- Underactive: tired, cold, gaining weight, dry skin, heavy periods.
- Overactive: wired, hot, losing weight, racing heart, light periods.
- Both: hair changes, mood shifts, and disrupted cycles.
Track how you feel and spot the pattern
PhaseBloom logs your symptoms and mood against your cycle in seconds a day, so you can see which days hit hardest and prepare before they arrive.
Why tracking helps
Thyroid symptoms creep in slowly, so a log makes the pattern visible.
- Note energy, temperature, mood, weight, and cycle changes over time.
- Bring the pattern to your doctor to guide testing.
- Retest as advised, since thyroid needs can change across life stages.
Track how you feel and spot the pattern
PhaseBloom logs your symptoms and mood against your cycle in seconds a day, so you can see which days hit hardest and prepare before they arrive.
Frequently asked questions
What are the early signs of a thyroid problem in women?
Often unexplained fatigue or anxiety, weight changes, feeling unusually cold or hot, hair or skin changes, and a shift in your periods. Because these are easy to dismiss, a simple thyroid blood test is worthwhile if several overlap.
Should I get my thyroid checked if my periods changed?
Yes, an unexplained change in your period, heavier, lighter, or irregular, is a common reason to test thyroid function, especially alongside fatigue, mood, or weight changes.