Hello all, I am hoping I can get some ort of guidance on this, because I feel slightly concerned, but I want to post on here to find out if I'm being paranoid or not. Here's the story: Monday (the 20th) at about 5am I fell, hit my face, and my teeth almost cut through my upper lip. I went into the ER and I got stitches, and was told that I should be all good and don't have to do anything special and was sent on my way. Where I am, at the time of posting this, it is currently Friday the 24th at slightly after 1am, so just a few hours shy of 4 days since it happened. The swelling is almost completely gone, and pain has gone down and isn't nearly as bad as the first day. After the second day, my mouth started to develop a little bit of a smell, but wasn't too noticeable. By today, the smell/taste seems very bad since it's coming from in my mouth, but smells almost exactly like tonsil stones. The wound itself is also looking dark and gnarly to me, but I know nothing about medicine. Additional information:

The doctor gave me dissolving stitches They gave me no antibiotics or pain medication or any prescription medication of any kind I do my best not to mess with it, though I do put bits of folded paper towel between my lip and gums to sort of act as a bandaid, and aside from taking the picture I posted below I do not mess with it apart from changing that bit of paper towel I am a smoker, and have continued to smoke since receiving the injury I was not told not to smoke, and have never had a mouth injury or anything like this and am not at all knowledgeable about any of this stuff, hence my asking for help. If there is something wrong and this is the cause or part of it, please don't be rude or berate me. If it matters, I also am neurodivergant and have OCD/Anxiety/ADHD/Autism/Depression so it could be that I'm just incredibly obsessed and worried about it and everything is good and I need to let it be. I did go back into the ER yesterday evening at around 630 PM, however they didn't even physically look at the wound just took my temp/blood pressure etc and told me all my vitals were good and I should be totally fine.

All that info being said/given, here is the wound photo.