Excitement gone?

So my first son was a surprise! So we didn't ttc with him. Then it only took one month to concive my second son. I know that I can take up to a year or longer to concive but with this one We tried for three months and needed to stop because of medical issues and now after starting again I'm on to month four. I guess all the charting analyzing and testing has just zapped me. I had a 40 day cycle a while back and I thought for sure i had to be but then nope. I guess i just feel over it. I know that sounds crazy so soon but i can't help it. Just wondering if any of you have felt like this. It's frustrating to be trying to maintain a really healthy lifestyle as if I'm pregnant and then month after month I'm not. Af just showed so maybe my hormones are making me looney.