how early did your symptoms show?

Kris
So I am cautiously hopeful... I am having a bunch of weird symptoms. I am CD 25 but CPO 3 (maybe 4?) and af isn't due for over a week and a half. We did bd the night before/of ovulation according to multiple tracking apps. 
This morning I woke up at 1:30 am and couldn't get back to sleep, it was super uncomfortable to lay on my stomach, congested and reflux was pretty bad. Managed to get a few hours of sleep around 6am. Now I am experiencing nausea, reflux, congestion and headaches. I had some light cramps yesterday and the day before. These symptoms are drastically different from any I have had for af in the past. 
Isn't it to early to for this to be pregnancy? Anyone else have super weird and early symptoms?