have ear infection I was giving amoxicillin which didn't clear it and then erythromycin 500mg to takke 4 times a day for 5 days when I was 22 weeks pregnant I checked with the pharmacist and they said it should be fine. So I took it and it did make me feel sick but it did take are of my ear infection. But I ve have been so very so worried and terrified it might of affected the baby's development in some way. I hate taking anything when pregnant and feel very paranoid about it. ? As dont usually taken antibiotics at all and wish hadn't a ear infection. Doctor said everything was developed at 22 weeks but I still dont feel any better.