Irritated

Is anyone else going through this? I am a FTM & my daughter will be 6 months tomorrow. I feel terrible and guilty when she starts being so whiney I get so frustrated. I try everything, feeding, burping, rocking her, soothing pills, & nothing works. I feel like I am going to loose my mind. I try and remind myself she can't talk and I am doing the best I can. During the day she just cat naps for 15 mins. It's becoming so draining and I feel like I am at wits end. Any suggestions are welcomed. I know unfortunately they don't come with instructions.