Terrible blocked nose during pregnancy

I was diagnosed with pregnancy rhinitis since 25 weeks! Been having runny nose, stuffed nose, cold symptoms and cough from post-nasal drip especially at night. I try to cope by sleeping sitting up or taking Zyrtec when it becomes unbearable. My gynae approves me taking Zyrtec for my symptoms and it seems to help! I only take 5ml dose and the liquid one that’s meant for children. Also, can ask hubby to apply Vicks on chest, back, nose & throat before sleep. 😊