35 weeks on Friday long day of cramps HELP


I woke up to cramps this morning they are in my back and feel like menstrual cramps. They have been here all day i went to work and back home I’m so uncomfortable i messaged my Dr. the nurse said that if my stomach is not tight it’s not contractions or BH however all the water in the word won’t make them go away baby is moving a lot. I’m a FTM my husband just left on a business trip I’m confused as to what’s going on with my body. I don’t know if i should be alarmed or not and the nurse seems to think it’s no big deal even though she doesn’t know what’s going on she says bring it up at my next appointment on Friday.