Is it too early??

Maria • I’m 26 years old TTC #2! I have a 16month old baby boy. We have been trying for a while. My period was regular before getting pregnant with my boy, after he was born it took exactly a year for me to get a period again.
After removing my implant we TTC the very next day. It has only been a week since then, but I have been having headaches, back pain and have been more hungry. I know that I have to wait at least one more week to test. But just wanted to know if these symptoms are related to pregnancy or am I just to anxious about having a baby that this symptoms could be psychological? Help please?