WTF sleep regression?!

Its been 6 weeks, why wont you go away!?!  Shes 5 months old now & we are sooo over this waking up at 1am and then every 2-3 hours afterwards. Where did the good old days go?!? Will it ever get better? She can put herself to sleep so its not really a sleep training issue i guess, but i can't figure out how to get back to the blissful 8 hour stretches at night! Has anyone gotten over it yet? Do they go back to sleeping well eventually?!