Hello I'll try to help you with my experience. This just happens, but I believe that is not normal.
Same things happens to me early on full tilt, and not so long ago on pokerstars
, and it was just few days after I made the bigest whitdraw ever on my acount.
After that nothing was the same, I think I lose maybe 100 hands in a row, ofcourse stronger hands preflop or on flop in more than 80% cases.
Later everything backs in a normal, but about a month I was unable to win a single hand. My advice to you is to handle, and after some time you will be winning again.