is it possible to develop an intolerance to a brand you’ve been wearing for about 7 years?

i’ve been wearing contacts since i was around 13 and im 20 now, they’re the acuve vita monthlies. i’ve never had any issues until recently, they’re fine when i first put them in but after a couple days they start to make my eyes feel really sore and dry. they tear up very easily and are sensitive to light and wind and i wake up with a lot of gunky build up around my eyes and a lot of the time they just burn for no reason. i take them out every night and i change them every month, the ones i have in now are pretty much brand new but my eyes are still burning. i also took about a week long break from wearing them recently and just wore my glasses, i had no issues when i was just wearing my glasses so i feel like this is an issue with the contacts specifically. is it possible that my eyes have changed and i can’t wear the same ones i’ve been wearing for years? could it be something to do with the solution im using(optifree)?