Pregnant? Or wacky?

Little backstory:

My husband is gone in BMT. We definitely had sex a couple times while I was in my fertile window right before he left, not trying but not preventing.

Now:

I work 7am-9pm a couple days a week. Normally I am fine all or most of the day. I COULD NOT stay awake if I sat in one place for a couple of minutes. I’ve felt very dizzy throughout the past couple of days, one day nauseated. Now my uterus feels full and not crampy but like it’s getting a light stretch almost. I’m getting a lot of discharge, more than normal. And I get emotional about little things. Is it worth testing, I’m 3 days away from my period. What were your symptoms?