Anyone terrified of gaining weight during pregnancy?

My first pregnancy in 2015 I gained about 80 pounds. I had preeclampsia and was on bed rest, I lived on pizza, pasta and rice. I’ve since lost all that weight and then some, and our daughter is almost 3. Fiancé and I really want to try for another baby probably in 2-4 years. I’m already worried about if I’ll gain it all back. I’ve been doing low carb with scheduled cheat days so I’ve been maintaining, but I’m already terrified of gaining it back and having to once again go through this long difficult weight loss journey. Of course I know it’s worth it and I definitely want more kids, I just am hoping next pregnancy I’ll be stronger against cravings and stick to my current eating style. Anyone else in the same boat? 😕