Incontinence in pregnancy?!

I’m 20 weeks with my second baby, first LO is 15 months. I wouldn’t say I was 100% strict with doing pelvic floor exercises but I did do them sometimes and I feel like I could generally hold my bladder (although a bit less than before, nothing crazy). Now since being pregnant I have noticed a massive difference!! When I’m coughing or jumping etc I am literally leaking, even when I have been to the toilet quite recently before. I often have to wear a pad now because it’s so bad. I’ve starting doing more kegels again now but it’s making me seriously worried for after number 2 what it’s going to be like!! Is this normal or should I be doing more about this? Thanks!