dizzy??

Brittney
Hey I'm new to everything. I got pregnant last July and had a miscarriage in October 2016. We weren't trying then but after the miscarriage we realized we were both ready to be parents!! So now we are trying. According to Glow I'm 4DPO. Today at work I've been super dizzy. Do you think it's too soon to have pregnancy symptoms. I know it's too early to test but I don't normally get dizzy like this. I was super dizzy when I was pregnant before. Should I be getting my hopes up or could it be something else making me dizzy?