"What other fields are there in which I could continue a BA career in?"

You can be some kind of analyst in just about any field you want ... analyze problems and come up with ideas to solve them.

I don't always do stuff in IT, I like to do other things for a change. I sometimes go to a place and conduct a study in operations and work flow analysis ... I'll watch how people do something and I'll even do the part myself to see what it is like and what might be needed to increase productivity and reduce errors. Write up what you currently see "AS-IS" and then suggestions on how to make it better "TO-BE" or "Future State".

A Non-IT Example I Did Years Ago:

A company needs someone to find out why their Nation-Wide tire changing stores get bad reviews on taking so long to put new tires on a car. They are losing money because people get tired of waiting and are leaving for other places. They need to wait on more customers to be competitive and make money.

You get your notebook and head over to a couple stores around you.

You watch how long it takes the employes to meet and check in a customer and then watch the tire guy how he takes the tire off a car, then goes to one side of the garage to remove it from the rim, then he goes to the other side to mount the new tire and then another part to balance it, then it is his break time, so he just leaves the car there and goes somewhere... you see the whole process and wonder, why all this walking, why not speed things up and put all the tire changing stuff in one area, why not finish the car before going on a break, etc.  This seems to happen in all the stores and not just one store that could be corrected quickly. You write it up and present it to management.

You can also write up Issues and Opportunities ... ways to impress customers and have them come back ... check fluids, clean windows, put covers on seats so they don't get dirty from the mechanics, etc.

Heck, Even McDonalds has a Process Engineer to serve you burgers quickly and without order errors ...

https://workflow101.wordpress.com/2009/12/14/mcdonalds-and-workflow-every-second-counts/

Remember ... all the Business Analyst / Process Engineer Stuff is not just in IT ... it is used just about anywhere you go ... so you have a wide range of opportunities.

Good Luck With Your BA Career, Where Ever It May Lead You.