run away bride???

Anyone else ever experienced pre-wedding jitters? Especially while planning the wedding? We're 8 months til wedding day and I'm starting to freak out and I don't know why. We've been fighting a lot lately, a lot probably having to do with how stressed I am but I'm starting to question every single thing hardcore. Every single thing my fiancé has been doing lately has been "wrong" or annoying the ever living hell out of me. I'm not trying to be this way..We've been dating for over 4 years so why would I just now start to feel like this? Someone please tell me this happens and is normal and will go away!?! 😭😣😣😣