Yes, it does get easier! You will find a routine and schedule that work for you. Some days will be a breeze and others days will be very depressing. But, you will get through it!
I am a stay-at-home mom. It's funny when people ask me that because I never even consider it. To me, I am taking care of our (foster) son. We own a retail business, so before CF, I worked there and part-time at a bank. Currently, my husband runs the business and has a full-time job elsewhere. So we have always been very busy. We made the decision for me to stay at home and never had any second thoughts since then.
The germ factor is the major concern about any sort of day care. No one is really as concerned as the parents. Next concern is the nutrition. Right now your baby is young, so it is probably just enzymes and a bottle. But, as your child gets older, the meals and snacks have to be high calorie and it will be difficult for a day care center to provide adequate food. Another concern would be the fact that you might bring home sickness from your job.
If you are able to financially, you should definitely stay home. Collin will be a lot healthier because of it.