Yikes...

So I know the only way to be absolutely sure that you are/aren't pregnant is by taking a test. However my period isn't due until next week, so I'm not taking one unless my period is late.

My husband and I had unprotected sex about a week or two ago. He pulled out and that's always worked before, but I'm nervous that it didn't work this time.

I'm also having some odd symptoms that I don't normally have before or during my period. My nipples hurt so bad. I got ridiculously emotional. (I know it sounds like PMS but I don't really get THIS emotional) I'm cramping more often but the pain isn't as intense.

I, of course, know that these can all be symptoms that women get before, during, or after their period, but I've never, and I mean NEVER, had symptoms like these.

Can someone help put my mind at ease? Or at least help me not stress so much over this?