Hi, I'll assist you with your question.
First, you should keep taking Claritin-D twice a day for a least 10 days. In addition to its congestion can try a nasal inhaler like Nasacort, two nasal inhalations per day. These two medications will help relieve symptoms of congestion.
It is often recommended in addition to the above take some anti-inflammatory as Enantyun 25mg two o three times at day, this will help to relieve the symptoms.
For your chest congestion you need to take an expectorant like Mucosolvan Compusitum syrup, 15ml three times at day.
For additional information I can gladly help. Please do not forget to rate the answer.