Matthew 24:8

“But all these things are the beginning of birth pains.”

So all these thing will be but the first contractions in the process leading up to His coming. There will still be a long way to go. Such birth pains which will lead up to judgment or to God's final consummation are a regular feature of Scripture (see Isaiah 13:8 where the Babylonian invasion is in mind; Matthew 26:17 where they will finally lead up to the resurrection; Jeremiah 4:31; Jeremiah 6:24 which are prior to the previous destruction of Jerusalem by Nebuchadnezzar; Micah 4:9 where it precedes their being taken to Babylon, but with the final deliverance in kind; and so on). Here Jesus warns that they will be long and arduous as birth pains often are, and that they are only just beginning. (Every father knows the interminable wait between the beginning of birth pains and the final birth that results).