Colds today vs 10 years ago

I have a cold. Just a regular cold. It felt so weird I almost didn't recognize it. I used to get colds like this - runny and stuffy nose, little sore throat, little cough, kind of tired. Now colds are three weeks long, they include fevers, chills, achiness all over my body - for days! They turn into sinus infections and won't go away without antibiotics. I thought this was just me getting older, but I think it's the cold germs getting stronger. I was talking to my friend who is a doctor the other day and he said that's absolutely what's happening. It's kind of scary, but makes me really like THIS cold that I have right now. It's "just a cold" instead of "I'm dying and will be in bed for 10 days kind of cold".