Stuffy nose in pregnancy is common . But associated sneezing , frequent colds need to be kept at a check . Try in home remedies like steam inhalation, stick on to warm water, avoiding cold stuff and use ear muffs in the early cold mornings .
A word of caution cold, cough , sore throat can also be associated with covid. Please keep a tab on it . If cold associated with frequent headaches can be sinusitis also , then u need a ent/physician consultation .
Cold once a while , yes u can take sinarest.
But prolonged symptoms need to be checked always .