I went to the ER this afternoon because i was having alot of pain in my stomach area for the past week well when the doc came in he was pushing where my uterus is at and it was painful..Well he checked me blood,pap,pee test well everything came good but my pregancy (blood and pee) test came back negative..He told me that it might be to early to take one but he thinks im prego and my uterus is stretching..What do that mean when he said that?