Stiff eyes after double-handed

It's been about a month since I had double eyelid surgery. Should I say that the inside of my eyes feel a little stiff when I open them? So, my eyes get tired quickly. Why is that? ㅠㅠ In particular, the area between my eyebrows feels very stiff (it feels like the eyebrow bone between the eyebrows is bunched up when I look at the monitor or study for a long time?) I have sunken eyes, so the lines are not thin, but when I open my eyes, I guess that's why. When I open my eyes, it feels like the skin under that line is moving inward and putting more pressure on my eyes.
 
Is this because the swelling remains? But when you look at it with the naked eye, there doesn't seem to be much swelling...? Is it normal for you to remain uncomfortable for a month or two? For reference, I used my eyebrows a lot before double eyelid surgery due to sagging eyelids, but I had good eye-opening power, so I didn't have my eyes corrected. I
 
still regret using double eyelids, but it's twice as stressful because my eyes are also tired ^ㅡㅠ