Non -stop coughing for a month

Im currently 22 weeks preggy, and have been having bad phlegm cough for more than a month and runny nose. There were days when it was better then there were days when i just coughed non stop till esp at night, till i puked. I realised that i keep falling sick ever since im pregnant and my immune system is something else. I did went to gynae bt they just prescribed cough medicine. Fyi i alr recovered from covid more than 2 months ago. Do any pregnant mummies gg thru this ? Cs my stomach getting more cramp when i keep coughing and honestly scared itll affect baby 😣😣 #FTM