I'm 31weeks pregnant, i have flu and my gp prescribed iliadin nasal spray and coryx effervescent tablets. are these safe?

Yes: Hi. The medications you were prescribed are symptomatic treatment, which means they will help you feel better but they won't cure the disease. In your case it is probably a viral infection, so you only have to wait until your body creates antibodies against that specific virus; this usually takes around 5 days. Again, it is safe for you to use those medications. Have a nice day.