Need Advice

First I should start out by saying I am new here, and was curious to get outside advice.
I have gone back and forth with nursing since I graduated high school. Meaning that I got accepted the first year but ended up moving and so I didn't go, then I got put on the waiting list and didn't get called so I got a full time job I worked there for a year and got married and had a baby. Now I have started nursing again, I am taking A&P 2 and have an A in the class by some miracle!!! Let me say that between all this time there has been a few times I have decided I don't want to be a nurse, I don't know why it seems after I started the A&P class before (I have taken it a few times but dropped out b/c I thought I didn't want to do nursing) I would go half way and think there is no way I can do this. So now I am doing really well in A&P and have the confidence. I have also worked in a hospital in the NICU as a PCA and loved it, yes it was really trying at times but I would definatley do it again. So my question is has anyone else felt like this at times or did everyone just pursue it and never look back? Does this make sense?
My husband and I live with his parents and I guess I feel like I want our own place so bad that sometimes I think I can just go back to being an insurance agent and make money and then we can get our own place. But then I think is that what I really want to do for the rest of my life? I hated sitting at a desk behind a computer and staring at the clock. I love learning about the medical field and loved going to c-sections when I worked in the NICU. So can anyone tell me what they think, everytime I have quit trying to do nursing I have regretted it. I guess I just really need a little support that the next 2 years will go by so fast and I will have forever to have my own house.