Toregar

Do you do the same routine i.e. same exercises/order of exercises ?

Possibly sounds like you're approaching a plateau. If you're finding the weights harder and harder to progress then try switching things up. There are many ways to do this such as changing the order of exercises, changing the types of exercises performed, rep scheme, rep tempo, grip/positioning changes, rest intervals, training volume, training frequency and some other ones that I'm sure I'm forgetting.

Personally, if I find that I'm struggling to improve reps/weight on a particular exercise I immediately change something about the routine involving that exercise; I'll employ one or more of the suggestions up top. Our bodies are amazingly adaptive to the training stimulus we put on them and so you have to always be one step ahead :P.