Labor feels never ending

Pre-labor started Tuesday night around 9 pm, went strong all night and fizzled out during the day Wednesday. Tried to kick start it again but finally just got tired and decided to her some rest. Contractions intermittently throughout the night tonight, longer but still 15 min apart. I don't know how much more of this I can take. I'm feeling so exhausted and discouraged. 41 weeks 6 days today.