Pms or pregnancy related ???

Ok so  I don't normally have pms symptoms at least not that often or maybe I'm paying more attention now that I'm TTC but I've been really irritated the last week me and my sister got into a silly fight and I was so mad that later in the day I took it out on my mom lol not in a bad way but was just bitchy and snappy then the moment passed and I was like I need to calm down then there was the next day and I was the same way for no reason at all besides I was so tired and didn't feel like watching my niece and nephew because I had my soaps recorded to watch before my hubby got home he's super fun and my nieces and nephews love him that's why they wanted to visit I later thought to my self how moody I was I was wondering if this is more pms like that pregnancy related I'm also very tired and hungry all the time .... I usually diet but sense been TTC gave it up maybe I'm just paying myself back for not eating a lot lol any thought would be helpful I'm 6 days away from af goin to test the 17th but right now it's 2 soon