I started checking my chem levels after winter just this weekend and my pH with a pH meter was all the way down to 3.5! Does this sound likely. I have only used trichloro tablets over the winter and I know they reduce pH some but this is quite a drop.
I would not jump to conclusions on that meter reading, but do you have a test kit? If so, run some tests now, and see where you are. Run pH and TA first. When was the last time you used and calibrated this pH meter?
My suggestion is to get a full test kit and get rid of the strips. I really would not wait on this and wouldnt rely on that low pH reading without some verification from a pH drop test and TA drop test.