Feelings before a positive ?

Hi all, sorry if this is long but im gonna explain as much as i can,
Im on the pill but i miss it often (sometimes three in a row,bad i know) and i dont take it the same time everyday.
I came off my pill last wednesday and ive yet to come on my period. If im late it'll still always be here by the saturday but today its monday afternoon and no sign of it. Im not experiencing any cramping (which i usually do leading up to my due day,usually strong pains too) but i have been experiencing really bad mood swings, irritable little things getting to me,sore breasts sometimes go away and come back, peeing more. I will get round to taking a test but i dont want to see another negative test! I was just wondering did anyone else feel this way before they found out they was pregnant? and when is it best for me to test? thanks in advance.