Absolutely nothing until 7-8 weeks, then gas and bloating and some (mild) nausea.

fainting, seizures, as someone noted above felt like a cold.

*eclamptic pregnancy though

A fever. I had what I imagine a hot flash might feel like on the night I’m assuming implantation happened, 6 DPO. The next day I had a stuffy nose, then positive test on 8 DPO.

I felt a fluttering in my uterus and also twinges/uterine heaviness.

Random Heart flutters while resting in bed. It was so strange and I looked up what could cause it- pregnancy was an option.

I had a couple of chemical pregnancies before I finally conceived my son so I knew exactly what being pregnant felt like. Even though I knew, my first sign was a very very faint line at 8 dpo lol. After that I had that funny pulling sensation in my pelvic floor that I only get when pregnant. I started feeling slightly nauseous around the time of my missed period.

A serious runny nose, like the beginnings of a cold without the other cold symptoms like headache and chills. This runny nose continued the whole 9 months, then went away postpartum. My OB said that's pretty common.

Also, very sore boobs.