Is this labor Urgent please


Hello I have had 3 kids but never went to labor all c sections so I am lost. To start with this one he is measuring large on fundum but I am 34 weeks I have had lower back pain for the better part of the day as well as period like cramps. I can not get comfortable sitting standing or laying, & I feel like I need to go to the bathroom but cant. It wakes me up and is a very steady pain I would say 4 on a 1-10 scale. I have taken tylonal and drank 6 bottles of water in the last 3 hours it wont let up. Note it has not gotten worse. What is yalls opions and what woukd y'all suggest to help make it more bearable. I do not want to travel at this time as we are under sever tornado warning and a bad thunderstorm. Oh I started lactating a little.