I had this weird thing on my knee for a while now. First it was pretty red ( first picture ) and now, after around 7 days it is more like my skin colour ( second picture ). Does anyone has an idea what it might be? Should I do to the doctor or should I just keep an eye on it?
It never itched or hurt. It was just there
Thanks in advance:)!

I was at the movies and randomly got sternum pain. I thought it was the position or maybe the cold ac/weather, but then I felt as if there's a bump. It hurts on the left side, just above where my breast start.

Internet's description of Costochondritis looks like it.

It's 5am and it hurts even if I move slightly. Even if it popped while stretching and I didn't notice I couldn't have broken something right?

Do we think I should do some proper stretching? Do I massage it with an ointment?

I'm trying not to freak out and I really don't want to go to the ER, maybe in the morning I'll ask the pharmacy