Weight Gain Issues

Im pretty sure I just ate 3 meals in one! Im a little over 13 weeks and can not get enough food lately! I dont want to gain weight to quickly or in an unhealthy fashion. I'm eating quality food, all of health value or sustacial homemade meals but still concerning! I haven't been an overeater or beyond average weight ever, so its concerning. Any one else having similar feelings or can provide support? I know I need to eat, and increase intake as my baby grows but at what point does it become alarming? Thanks