i feel like i’m going into labor

i’m 35 weeks 5 days and have been up since 2am. finally went to bed at 7 and then woke up about 30 min ago (8:30) to really bad stomach ache feeling like i had to poop. i did poop and after i was all empty i still am in so much pain and having urge to push . feels like i’m having menstrual pain . just started timing contractions i’m just so scared bc hubby is at work and has our car