Yeast infection

See your gynae and do a swab test to check what kind of infection it is. Different medicine are used to cure different infections. There might be an expiry date to your current meds as well or it may not be safe for pregnancy. Also, if antibiotics is what you need (for infections) there’s a specific dosage needed to fully cure it. If you only have 1-2 tablets left from your previous infection it may not be enough to cure your current infection.