Hopes are already high

I had my mirena removed Aug 10 after not wanting to deal with the side effects anymore (moodiness/acne). I started a "period" the night before the removal. About a week before that, my husband asks if we're going to try to have a baby. Not going to lie, it was on my mind, but not in our "plan" until a few years from now. Anyhow, they say there's never an perfect time, so we decide to go for it. Only catch, I have to be pregnant by the end of October or we will have to wait until Aug-Oct 2018 to try again. Reason being, I'm heading into my 3rd year of nursing school and if I conceived any later in the year, I would be due during the term of my senior year. I'm a 29 yr old non-traditional student, so please no "wait til your older and graduated" comments, please? I'll be 31 when I graduate and it will by just as easy to have an infant in the house now as it will be when I am job hunting and starting a new career.

Anyways...I know it takes a lot of people much longer than 2-3 months to even get a normal cycle back, much less conceive, so our hopes might be completely unrealistic. I can't help but have my hopes up though. I've been tracking my bbt as often as I can and using opk's daily since I stopped bleeding. No positive yet. I don't temp on days I work overnights because it was always an abnormal spike d/t sleeping during the day instead of at night.

I realize it hasn't even been a month, but I can feel myself getting so anxious that we'll fail. How do you deal with high hopes and stay relaxed through this whole process? Each day of my cycle seems to pass so slowly!