need some encouragement

So this growth spurt started a week ago - baby was almost 7 weeks. It started with cluster feedings in the evening. Three days later she was nursing every hour, day and night. This is day 4 of hourly nursing. Therefore as EBF, I have not gotten more than a 40 minute stretch of sleep in 4 days. Please I need your success stories! How long did this last?
I think I am so discouraged because before this she was sleeping 5-7 hour stretches. But positively, lo looks really healthy even though mom doesn't!