Swollen eyes - is this an allergic reaction or too much retinol at once? (photos)

I used The Ordinary Retinol 1% Squalene for 2 consequtive nights. I woke up the next day and my skin was burning when I applied my usual morning cream. I decided to skip the retinol that night, took an antihistamine just in case (one of my eyes looked a little bit swollen) and went to bed. the next day i woke up and BOTH my eyes were very swollen. I took another anithistamine and now they look almost normal, even thogh my skin still stings when I apply sunscreen. https://imgur.com/a/ox2cr