The most common side effects of Paragard are heavier and longer periods and spotting between periods. For most women, these side effects diminish after the first 2 to 3 months. If you are switching from a hormonal method, your period may seem heavier.
Every woman is different and for some, the adjustment period may take longer. Periods over time usually return to whatever is normal for you. If your period continues to be heavy or long, or if spotting continues, contact your healthcare provider.