Hello there,
You can travel in 21wks of pregnancy if you don’t have the following-
1.Placenta is not low lying
2. You don’t have pregnancy induced hypertension
3.You have normal blood
sugar levels and are not diabetic
4.You don’t have short cervix ( usually the length is mentioned in Ultrasound)
4. You don’t have any spotting/ leakage through vagina.
5.You don’t have pain in lower abdomen.
Health Tips
Stay well hydrated, choose aisle seat incase you need to pass urine frequently or need to stretch / stand , carry your own healthy snacks, avoid buying food/drink from vendors, carry emergency medicines with you, carry back pillow to support your back, avoid heavy weight baggage lifting.