Super gross and I’m sorry but labor or tummy troubles ?

Woke up at 4:20 with the feeling I needed to make a BM and my Tummy was hard went to the toilet and had the worst cramps in my entire life, like I’m crying cramping there’s pressure in my vagina/perineal/ rectal area. Started shaking really bad and had Intense pressure that made me nauseas I had several loose BM no water breakage or anything baby shifted and I’m still having cramping, tummy tightening, and shakiness my vagina feels super swollen and there’s a lot of pressure I just went to the ER yesterday to get checked and everything was fine. Is this the beginning of labor? I’m really scared but don’t want to look like a crazy first time mom going to the hospital every couple days... I’m 35 weeks 5 days