Try this: check to see if you have the sponge inserted deep enough. It should be up against your cervix.
Still not working? If you are still having trouble, and you want to use a barrier method, you may want to switch to
Try a different method: condom, Diaphragm, internal condom, IUD, Patch, Pill, injectable.
References:
- World Health Organization Department of Reproductive Health and Research and Johns Hopkins Bloomberg School of Public Health Center for Communication Programs (2018) Family Planning: A Global Handbook for Providers. Baltimore and Geneva. Retrieved from https://apps.who.int/iris/bitstream/handle/10665/260156/9780999203705-eng.pdf?sequence=1