If I put your stats in for a 25 year old (I don't know your age) and no exercise it comes out to 2700 calories per day during your second trimester.
If I put your stats in for 25 years old and exercise 3x a week it comes to 3000 calories for your second trimester.
How does that compare to what you have been doing? I don't think this is an exact science but it's a start. I personally wouldn't add 300 extra calories in my second trimester because I'm already obese. But hey, that's just me. The calculator I used also added on 500 extra for the third trimester and I really don't see a reason to add that much. So, like I said..it's just a start. You can google and find different ones.
Oh and by the way, I am very jealous. I see you live in Miami. I LOVE LOVE LOVE Miami and keep trying to tell my husband we should move. He doesn't seem to agree.