I had 10 implants fitted in my top jaw i also felt extreme pain when he was tightening some i had to stop him as it was really hurting. In the end he continued to fit them and so far the top set have been ok but i had 10 posts not 2 . I do believe giving them more time to take may be helpful but only time will tell.
I am considering having a post added to the bottom but out of 6 posts 4 have broken and my whole lower bridge has come off, unfortunately i had these done In India so i am totally screwed. Good luck with yours.