Early symptoms of pregnancy?

Hi all,
First time posting, first month TTC. I'm supposed to get my period on the 25th and I'm feeling a lot of pressure on my lower abdomen area. I've never had this feeling before- it feels like pinching/pressure. Hard to explain but I'm hoping you ladies will weigh in on your earliest symptoms of pregnancy? I don't have sore breasts or feel anything else - just this feeling and sudden urges of peeing. I want to take a test so bad but I think it's too early. Please help!