It's important that these are done with caution during pregnancy as you don't want to create too much intraabdominal pressure so make sure you are doing your pelvic floor exercises and that you are not straining! I recommend that you see a specialist physio to guide you through pregnancy and your pelvic health. All the best!
Find those muscles under the waist - they should pop out when you cough but also when you pull in your belly button imagining you're making your tummy flat and 'hard'! Keep practising!
