Advice?

For the past two weeks now my boobs have began to feel overly sore and quite painful and now within the last week I'm feeling stretching in my tummy, nauseous throughout the day, dizzy, very tired and going to the toilet a lot more as well as changes with my bowels. Not to give any weird details but my discharge has changed as well recently although I'm due in two days, if I don't start I don't know whether to take a test?