Hi, thanks for using healthcare magic, I am sorry that you feel unwell The presence of blood in the mucus can happen in viral upper respiratory tract infections because the nasal passages are usually all inflammed from the virus. Since viral illnesses are one of the most common causes of an acute asthmatic attack, you should consider increasing the amount of the preventer that you use and you may want to consider using your reliever in case the shortness of breath is an indication of an acute asthmatic event. In terms of the fever and chills , you can consider using paracetamol, use of tepid/ room temperature baths to cool your body, fan therapy.Resist the urge to bundle up, when persons get chills they tend to bundle up, this will only increase your temperture. In light of your history of asthma and the shortness of breath that you are currently experiencing , it would be best if you seek medical attention as soon as you can. I hope this information is helpful and I hope that you feel better soon