Junkfood and pregnancy

Lupita • Baby #1 born asleep. Baby #2
During my pregnancy I have alot of food! And many of it has been junk food before I was pregnant I was healthy I went to the gym meal prep food. When I became pregnant I let go of that and decided to eat whatever I was craving. I am 38 weeks and gained 25 pounds in total. I am very small not many people can tell i'm pregnant which is something I am always wondering about I eat alot plus im pregnant and do not look pregnant? Has anyone had the same problem? I wish I could of been a bit healthier maybe i'll regret it once I give birth!