Am I just hoping?

My fiancé and I are not trying to conceive at the moment, but I feel like I may be pregnant. What do you think? :)

Last Friday (December 26th) I had to stay home from work with diarrhea/gas and abdominal pains. I was slightly nauseous that whole day and have been very mildly nauseous since yesterday morning with some mild cramping (January 1st). I thought I may have just eaten something bad or gotten a stomach bug.

Over the past week I've had a slight loss of appetite and get full very quickly when I sit down to eat a meal. I feel bloated and full even when I haven't eaten in a while. I've also noticed a stronger feminine odor than usual, and on a few different days over the past week or so.

My fiance and I had sex about three times in my fertile window (December 16-23ish), however I am on the pill. I never have any pms symptoms (no cramps, headaches, etc. just general bloating sometimes). I am generally good with the pill, but some mornings I will take it a little late.

I should be getting my period on January 5th, so we'll really just have to wait and see!

Has anyone else had a similar experience getting pregnant on the pill?