vaginapagina | Pregnant = no PMS symptoms?

I couldn't find this question in the archives, so I hope it hasn't been asked before.

This month I haven't had any signs of PMS, although my period was due the 31st and I should have been PMSing for the week leading up to that. I know I probably didn't ovulate yet for some reason (I've been a little sick), but I am paranoid and it begs the question: if the egg is fertilized, will you show signs of PMS?

I know PMS is in preparation of your period, so logically the answer is no. But many early pregnancy signs are the same as PMS signs (breast tenderness, fatigue, so on), so if you get pregnant, shouldn't your body still act the same? I'm just wondering, because my breasts ALWAYS hurt leading up to my period, and they've been happy and painless the whole month. Could it be that breast tenderness is, for me, a sign of PMS, but not an early sign of pregnancy?

I hope this makes sense, I'm very bleary-headed today. :) Thanks!