Chinese medicine believes that the spleen is the main transporter and transformer, and spleen deficiency and dampness can lead to gastric distension and stuffiness, loose stools and diarrhea, so you need to strengthen the spleen and eliminate dampness. Since you have spleen and stomach deficiency and cold, you can use Radix Rehmanniae Pill and Xiangsha Liujun Pill to warm the yang and dispel the cold, benefit the qi and strengthen the spleen, and move the qi and resolve the phlegm. It can be taken for a period of time, or as prescribed by the doctor.