Hello dear Thanks for your query Did you have such episodes before? Do you have episodes of wheezing and breathing difficulty since birth? How did this episode start ? Are you having associated fever ? How long this episode of breathlessness continues? or is it whole day ? Dont neglect and get a checkup from your doctor. You will need the lung function tests, blood investigations and chest radiograph done.Culture sensitivity test of throat swab may be needed if its respiratory tract infection. Do warm saline gurgling 4 times daily for 5 days take steam inhalation 4 times daily for a week take Vit C 500 mg tablet once daily for a week have plenty of fluids take levocetrizine 5mg twice daily for 5 days [levocetrizine is considered a pregnancy Category B medication. This means that it is probably safe for use during pregnancy, although the full risks are not currently known .] Take paracetamol500mg twice daily for 3 days and thereafter sos for breathing difficulty you may need salbutamol inhalation during acute attacks but its category C drug so proper data regarding its safety in pregnancy is not available. You may need antibiotics if you are having respiratory tract or lung infection. So go get a check up from a chest specialist.Dont self medicate. Hope this helps. Take care.