Sorry to hear this is happening during pregnancy. Most times unwanted health issues happened to pregnant mummies. This occur because of hormonal changes and imbalance hence why some of us had this issues during pregnancy. Sometimes even when you are cautious about your food intake this will still happened.
This perhaps can explain the issues above. On a side note, do get advice further from your gynae pertaining this issue to reduce or prevent this from escalating further in months to come.