Should I even bother testing?

Okay normally I am on a 30 - 33 day cycle this month my period came on day 28 and lasted one day so now I am on cycle day 6 the past two days I have been exhausted and can not get enough sleep. Yesterday my breast's were very tender and sore to touch. This morning when I woke up my breast were noticeably swollen I had to mash them into my bra and had trouble finding a shirt that fit over them. I was also throwing up this morning and was unable to eat until 2 this afternoon. By 3pm I am ready for bed. Should I even bother taking a pregnancy test since I did get my period for a day. Has this happened to anyone before. When my period came it was completely out of the blue and I hardly had any cramps which is out of the ordinary for me. People at work kept commenting that I looked tired and one of my close friends noticed the increase in my bust size as did my husband. What do you all think I should do? Thanks for the advice.