All contraceptive options are the available for you, your partner and your doctor to choose from. In the past, women with type 1 diabetes were advised to avoid taking the birth control pill because of an effect on blood glucose and the risk for heart disease and stroke. However, changes to the level of hormones in the pill in the last few decades have greatly decreased the risk of these problems.
Blood glucose fluctuations are more likely with combination pills, and some doctors may suggest progestin-only (‘mini’) pills to avoid this issue.
There was also concern that IUDs (also known as the coil) might pose an increased risk of pelvic infection or trauma to the uterine wall, and women with type 1 diabetes might be particularly vulnerable to these infections. The new generation of coils appear to be safe in this respect. Using a diaphragm does not affect blood glucose levels but you be have an increased risk of yeast infections. Speak with your doctor and healthcare team about suitable contraception options.