Never thought I would do that

Well was getting my stuff ready to go take a shower so I could go see my grandma in the hospital. Just got all my stuff ready and started walking to the bathroom and my boyfriend comes in and says we can go tomorrow and I randomly snapped at him and said I was just heading to get my shower but whatever. He said Wow okay and leaves the bedroom. I have never snapped at anyone like that before. I have had back pain and pain in my stomach since yesterday morning. my boobs have bothered me for the past couple weeks. I didn't sleep well last night tossed and turned all night. Not sure why i have this pain. Want it to go away! Dont like feeling off?