Fussy baby at night

Has anyone experienced night time fussyness? It's usually around her last feeding she will nurse around 9pm and will be hard to get asleep and she cries acts hungry but if I try putting her back on she just cry and pull away I rock her and have to walk around with her then around 11 she will finally eat a little more then I can get her asleep with rocking and comfort. She is 11 weeks old and sleeps for 6-7 hours at night but I am going back to work next week and work very early in the morning im afraid I won't get any sleep with her being so hard to put down at night any suggestions?