Hello everyone) tell me how your labor started, what sensations during…

Hello everyone) tell me how your labor started, what sensations during contractions? The second day something is happening, I can't understand what's going on with me. I thought it was training, but what if not...? The condition is not like it should be in the hospital, but scary already) It pulls at the belly, then the waist, and everything together. But everything is bearable. I run to the toilet and go small and big, and constantly such a feeling that I want to pee. Yesterday I even threw up me out of nowhere. Scary that early. 35 weeks only, I haven't even fully packed my bags yet...