My son is still sick (16 weeks old)

Mia • M O M M Y 💕

So now it’s 7 weeks since my son has first gotten sick. He has been VERY congested and sneezing for the whole 7 weeks but within the last 3 weeks he’s gotten a cough that has just gotten worse. We have taken him to a few doctors and they all say allergies. But when this started it was 100 degrees outside and no rain. About 5 weeks in it finally rained. So I thought that would help it if it’s allergies. Well, 7 weeks and it’s still bad if not worse than it was. This morning it’s like he could barely breath from congestion and coughing. He doesn’t have a fever.

Would you take him to the doctor again? Or just keep waiting it out?