If she is gravid, but eating well and acting normal then she is resorbing the eggs , which isnt exactly normal but it is fairly common.
Most iguanas resorb because they are unhappy with their living conditions, something isnt quite right. Same with being egg bound, they are to stressed to lay, so def read up on care and conditions ang dig boxes and so on.
Finding a vet is your priority and obligation. We used to drive 4 hours ONE way to get to a vet, now we drive 45 minutes (thankfully). You also need to set up money on the side for your iguanas care. Exotics are generally more expensive when problems arise.
Egg binding is the number one killer in captive females so def look into it . If you send me your city and state I am more than happy to look around on the web to see what might be in your area