Girls, hello. I was in so much pain all night. My lower back hurt, it …

Girls, hello. I was in so much pain all night. My lower back hurt, it felt like my stomach was being squeezed, almost all night I kept running to the bathroom for small pees. The baby was very active. By morning it's gone, now there is a dull ache in my lower back, nausea and weakness. Could this be the beginning of labor?