monthly injections in both eyes for over 4 years now. Gradually the "after" pain was getting worse and worse . I would mention it to Doctor who brushed me off . The last 5 injections where almost unbearable, swollen , burning eyes. The last injection kept me in a dark room with eyes closed for 36 hours. I finally reached my limit, took selfies and demanded to see Doc outside regular visit. I developed an allergy to Iodine that caused all this misery, gradually causing me all this pain.
Last visit , no Iodine, no pain !so don't think anything is "normal" complain and insist to talk to your Doctor, not just a brush-off. We are humans, not test subjects !