Should I end it with her?

So my girlfriend has been really grumpy and complaining about everything and I feel a bit burnt and I sometimes think I don’t want to see her and think about ending it! But I know I will be heartbroken! Like last night she was snoring so I told her I’m going out to the couch and she said I’m not going to nag you to stay I’m to tired! Is it just me or is that mean she could have just said sorry or ok. I don’t know what I feel when she comes and says sorry I’ve been a dick and gives me a big hug I just say it’s ok, but now that Im away from her at the the moment it really isn’t ok and I don’t like it. I still love her but I just feel so drained by her and sometimes think I should leave her. I don’t know like right now I feel a bit depressed. What can I do? She just says it’s her special time of the month! But that’s no reason to be a cow