Possibly Pregnant - looking for advice!

Hi Mamas!

My period was due on Wednesday and we had sex three times during my fertile window (unprotected because well....sometimes that just happens, sigh.) We're not trying to get pregnant as we currently have a 9 month old.

I've been feeling SO lousy - headaches, sore throat, post nasal drip, fatigue, diarrhea, low back pain, bloating, night sweats and some cramping similar to my normal peroid. I took a test yesterday that was negative and one a few days before that was also negative. When I got pregnant with my first, my test was positive the day before I was due for my period. I'm so nervous, ugh! Any thoughts on this? Thanks Mamas!