Had facelift on 21st December had a seroma on my left side of neck. Is this normal? (photo)

Hi there, 
It seems that you have accumulated fluid under your skin that will need to be drained. If your salivary gland has been the source of the fluid, then eating a bland diet that does not contain any 'sialagogues' will help. Sialogogues are foods or medications that promote salivary production. You can look up diets that are less likely to promote saliva production. Your plastic surgeon should see you regularly to help manage this. For the drooping face and trouble speaking, this is likely related to the nerve function, which comes back with time. This is most certainly a discussion you need to have with your plastic surgeon as soon as you can. I hope this helps. 
Phillip Dauwe, M.D.

Thanks for the question and sharing your photos. Based on your photos, it appears that you have a seroma on the left side which is a benign condition with an inflammatory fluid collection, or it could be a sialocele which is a collection of saliva resulting from unintentional surgical manipulation of the submandibular salivary gland. Among the two concerns stated in your question, paresis of the face is the more worrying. The usual course of such loss of sensations is self-limiting, not requiring any specific treatment. I would advise you to consult your plastic surgeon and have a detailed personalized evaluation for your post-surgery concerns.I hope this helps.