I had a scrape and road rash on my knee, I let it scab over instead of picking at it, when I did pull off the scab in came off in fiber like layers, the skin underneath was red but the pharmacist said it just looked dry. I ve been putting a triple antibiotic ointment on the skin, recently I found a lump filled with liquid, after pressing it it popped and a mostly clear slightly yellow liquid came out and a little bit of blood. I ve had another scar that had liquid before but I don t remember it being red or having that issue with the scab. Is this something I need to worry about?