With your lower eyelid drooping, you may very well have some eye irritation due to corneal exposure and drying, which can contribute to swelling. Your surgeon can give you some stretching exercises and instructions on how to prevent drying at night, which will help your eyes feel more comfortable, and may help with swelling while you wait it out. For now, the best treatment is tincture of time. Usually the drooping will resolve with time, but it is possible that some day corrective surgery might be necessary if it does not resolve. Lower eyelid surgery can sometimes have a difficult recovery. Keep in close contact with frequent followup with your surgeon. Good luck.
Looking through your prior posts, this is now surgery number two on your lower eyelids. Your prior photos suggested that you had lower eyelid retraction from the original surgery. Under the circumstances I can't understand why you would get more lower eyelid surgery and skin removal. It would be foreseeable that if you started out with lower eyelid retraction, removing more skin would make you worse. The first thing to do when you are in a hole is to stop digging. Please let yourself heal. Lower eyelid surgery is very humbling and your surgeon would not be the first surgeon so humbles. Your redness is most likely to drying and exposure and not "allergies." There is help for you. Consider down loading my free ebook on eyelid surgery which discussed at length fixing issues like this.
Swelling is typical after lower lid surgery, though for most it will last only several days. Talk to your surgeon about lid massage, or perhaps tape to support the lid until your swelling improves.
It is hard to comment without seeing a picture or an in-person evaluation.
Your plastic surgeon may consider using massage, tape, or a suture to help control this.