I am scared that my ear drums may hurt or puncture while in flight?

I caught flu 5 days ago. Most symptoms are well under control except for a bad cough and mild headache and fatigue. I am not 100% recovered yet. I have to fly tomorrow (Los Angeles to san francisco) and I am scared that my ears will hurt. I have already had my right ear drum rupture during descent in a flight once. I made a trip to a urgent clinic doctor just now and after checking my ears, he says I should be OK to fly. I am not so confident as he didn’t guarantee that my ears will be 100% OK. He just said everything looks like you will be fine. Shall I take the risk and fly tomorrow? Please advise.