This anulon vilom pranayam will help with the breathing difficulty and you can keep doing it throughout pregnancy.Review your medication after you start to feel the benefit.
Build up your timing gradually.If you feel tired or dizzy, stop and resume after one minute.
Anulom Vilom –
Close your right nostril with thumb and deep breath-in through left nostril
then – close left nostril with two middle fingers and breath-out through right nostril
then -keeping the left nostril closed deep breath-in through right nostril
then - close your right nostril with thumb and breath-out through left nostril.
This is one cycle of anulom vilom.
Repeat this cycle for 15 to 30 minutes twice a day.
Children under 15 years – do 5 to 10 minutes twice a day.
You can do this before breakfast/lunch/dinner or before bedtime or in bed. Remember to take deep long breaths into the lungs.You can do this while sitting on floor or chair or lying in bed.
While doing anulom vilom, keep your eyes closed, concentrate on the third eye (point in between the eyebrows).
So as not to harm you or your baby, stick to natural anti-inflammatories. There are plenty out there. I have moderate COPD (asthma, emphysema, chronic bronchitis) and I do better on natural preparations (which have no dangerous side effects). Standard meds nearly killed me. I should think they would not be great for your baby and they certainly aren't good for you.
You are a good mother to question if the medications you take will harm your child. In this case however, it is generally said that the mother NOT taking the meds will have a more adverse affect on the baby. If the mother can't breathe properly and has a low oxygen level as a result, that is REALLY not good for the baby. Talk it over with both your OB and the dr treating your asthma. There are options and ways to get around some of the meds. Immunotherapy allergy shots are frequently started during pregnancy to help relieve the mother's symptoms and lower meds taken.
Feel better.