Open your dictionary or if you don't own one, use an online one. Look up microevolution. Then look up macroevolution.
They exist as words. I dislike the use of the terms because while they make sense, creationists misuse them and invent extra definitions to fit in ID around evolution.
Microevolution: Evolutionary change involving the gradual accumulation of mutations leading to new varieties within a species.
Macroevolution: Major evolutionary transition from one type of organism to another occurring at the level of the species and higher taxa.
Both those words are correct, but you seem to believe that both of them are supposed to happen in the same time.
Microevolution happens over short period of time. Let's go back to my earlier post, but change a few words around:
Microevolution happens repeatedly, with each generation being slightly different to its parents and ancestors through small variations. As each generation goes by, these differences add up. Microevolution continues to happen, with variation each time. And what happens when you get lots of variations?
Macroevolution.
Eventually, the differences have mounted up to the point where the descendant is considered a different species to it's ancestors.
See how they are the same yet? The only difference between microevolution and macroevolution is the length of time you give it to happen.
As a result, to avoid confusion, stick with just using evolution. You can use microevolution and macroevolution if you really want but you have to understand what they are first, which you clearly didn't. And the words have all those dangerous side-effects too, don't forget them.