Painful pressure 25 weeks...

Since about 3am (current time is now 11:55am) I have had a continuous non stop pain in my vagina/rectum. I am not constipated or anything but it's starting to mess with my work performance as I cannot stand for too long. The pain intensifies every now and then and then goes back to the original pain. I'm iffy about going to the hospital because everytime I go thinking something is wrong they say I'm okay. Anyone ever had this? What should I do??