It is definitely best to get them checked. The warmth/redness and the stalling of healing are concerning. If they are over 12 hrs old or so, the dr won't close them. Too much risk with sealing in infection, but you might need antibiotics and advice on cleaning and bandaging, given the area. For example constant rubbing or touching can cause greater risk of infection, so some may need to be bandaged while others don't. A dr would be able to tell you.

If not your dr, what about an urgent care place? Not quite the ER but also not your dr. Trust me, Dr's see this stuff more than we would like to think, and (where I am) as long as your not an immediate risk or sui, they can't force psych hosp.