Talk to Ent Specialist on Sinusitis

Asa. I am 26 year old primigravida at 11 weeks gestation.i am having chronic sinusitis since i was 9 or 10years old. Sometimes it aggravates sometimes it doesnt bother me..but now a days weather is changing and i am having conitinuous stuffy nose with almost all day sneezing..i cant lay down due to blockage of nose as it causes difficult breathing even with 2 pillows. I used to take xynosine drops and anti histamine which used to relief me symptomatically but now due to pregnancy i cant take these medicines..kindly suggest me what should i do as its really getting difficult for me to handle. I have tried hot water steam.hot compresses but they are of no use..thankyou