8 month baby with cough runny nose

Ta

Hey guys! My baby has a hard cough I can hear he’s congested and has mucus moving around in his chest. He’s been crying constantly when trying to take a bottle or sleep. He’s had a fever here and there of 101. He’s been sick for about 5 days now when should I take him to the doctor? Any tips I could use to help soothe this symptoms! I’ve been using baby vapor rub, zarbees cough & mucus, & infant Motrin.

It’s so hard to see him in pain!