Help Me

4th day late, I had bad bad cramps today especially on my legs it's so uncomfortable. O felt a lil nauseated for a couple mins. I'm running to the bathroom Everymin thinking my period is here because I'm feeling wet down there. O haven't gotten any spotting nothing. Sharp pain in breast but doesn't stay for long. I'm just confuse on to what's going on with me. Being that its 4 days I dont want to waste money for a test. But has anyone experience this before, was your pregnant or just late