Always wanting to breakup on my period?

Ok so I’ve been in a very amazing 3 year relationship, but I’m seeing a pattern. Usually a week before my period starts i start second guessing every detail of my life, mostly my relationship, and job. I have no idea what it is, but i have this urge to just be mean to my bf & everything he does is soo annoying and frustrating to me. Sometimes i convince myself that I’m “bored” and need to end things. I also then convince myself I’m miserable at my job & need to find something else. A family friend used to joke “never make any serious decisions on your time of the month” ... maybe she wasn’t joking. Really feeling bad, & annoyed with myself now, anyone else find this happens to them ?!