Maybe baby?

Why is it that whenever I am really tired now I automatically assume I am pregnant? I don't even get a period on my own most of the time, and yet if I am exhausted my brain says, "OMG, you must be pregnant because you are SO tired." Women who are pregnant are usually SO tired.
My husband and I were driving home from a Chamber of Commerce event, an event in which I turned down wine (GASP) and an invite to eat at one of my favorite places for dinner (WOW). I just wanted to get home and relax; so in the car ride home I said out loud "maybe I am pregnant". It seemed random out loud but I already had check-listed that I dissed wine, turned my nose up to good food, and instead opted for pjs and bed. Mike, never one to get overly excited (therefore never overly disappointed) about the possibility of being pregnant and knowing how my random thoughts work responded, "maybe it could do with that fact that you just had 2 killer and long back to back days at work, on top of a fun but tiring long weekend away." Maybe, but....I did just have the hysterofoshizzleagram which women have been known to get preggers right after having...and I did feel like I was maybe ovulating earlier in the week. I am not really sure what ovulation 'feels like' but this week it kinda felt like eggs were climbing downstairs. When I got that feeling I took full advantage of my husband in hopes of taking full advantage of the potential ovulation power. I know that it would be unlikely I would have symptoms one week or 2 days after getting knocked up, but maybe I am clairvoyant or something. Maybe my body gives early signs since it's taken so long to get those eggs downstairs. Or maybe I am just tired from a long 2 weeks. I know Mike is thinking the latter, but me, I am okay thinking it's a possibility. Who knows maybe I am with child and can start reading palms.