Is this PPD? Or normal?

I'm a FTM and have a 6 week old. I look at her n she's adorable and too too cute & I love her n feel loving but at times I'm soooo irritated N tired esp with the sleeplessness that comes with having a lil one n the baby's crying n the constant demand on u as a mom managing all this where u don't even get a sec to go to the loo or even eat ur foood and OH I'm BREASTFEEDING! (Exclusively) !! Is it normal to not feel mushy love all the time n be irritable?

(I m not angry at baby or any extremes not in any dark space/mood, just irritable with lack of sleep or rest) does/has anyone else felt this way with their babies or am I a mean bad mom?????