Wtf is happening!!!

Am

So ladies here’s the story! I lost my first born at 24 weeks and 5 days, and while I was pregnant I obviously had maternity jeans! Well I had this white pair that hardly fit they were to baggy so never wore them. While I was pregnant with my son I had such bad morning sickness that I actually lost weight (fit in clothes I couldn’t fit in a year ago) So skip a few months and I’m currently just over 4 weeks pregnant and these white maternity jeans fit better than they did with my firstborn!! And before you all say I was comfort eating I wasn’t, I hardly ate and when I did I changed my diet to healthy, and with this pregnancy I’m doing soft exercise (walking the dog longer) and still eating healthy! Any idea why these maternity jeans are fitting better now?