I’ve been sick for 3 weeks now!

Ive had really bad sinus problems for over 3 weeks now and I’m getting tired of it! I know it’s not just allergies either, because it’s (sorry TMI) green mucus that I keep coughing up/blowing out. I’ve had a nasty cough and been blowing my nose 24/7! I’ve gone through 3 boxes of tissues already and it’s not getting any better.. I’m 16 weeks pregnant so I can’t take any medicine. I’ve literally tried EVERYTHING. I eat healthy, I eat a lot of fruits and vegetables, I drink a lot of water every day, I use a humidifier and essential oils, I’ve drank hot tea, lemon and honey, everything!!! What is wrong with me, I just want to feel better again!😞🤧 Anyone else has this happen to them before? What did you do to help it?