freak out

I think I might be pregnant again. And while this would be a very exciting moment. I am so anxious and freaking out! We are not in a situation where we can afford to have a second child. My husband was laid off and is having a hard time finding a job. With one income we are just getting by. 
   I am on birth control and he usually pulls out but omg the sex was soo good and I agreed I was in the green window but the beginning so the chances are low but ugh idk 😐 
   I feel so guilty right now and I also feel sad and I feel selfish.