Completing university (especially a degree like nursing, with lots of shift patterns and travelling to different placements) is very difficult with a baby. Not impossible, but very difficult. Both practically and financially, especially if you don’t have parental support.
I think the main things you need to consider is where you will live, who will look after your baby when you are away on placement and how you will afford to pay for childcare if family aren’t having the baby (assuming your boyfriend is also studying or going out to work). You should also contact the university about time out of training as soon as possible - I presume you hope to start your degree then have maternity leave?
I believe you are entitled to a training grant (which is a few thousand a year I think) and an an additional grant for health care students with dependents (another couple of grand per year) on top of your student loan. Unless your boyfriend is earning a good income though, it’ll be very, very difficult to stretch that to rent, living costs and childcare. The only health care graduates I’ve known who’ve made university work with a baby do so by relying on family for nearly all of the childcare.
I think you need to consider all eventualities as well. Assuming your boyfriend doesn’t work shift patterns and isn’t doing a degree similar to nursing, he will have to step up to a lot of childcare while you are on shift. He may be excited now but regularly solo parenting is hard. If you and your boyfriend were to split up how would you manage as a single parent? You have little protection currently and, if he is also a student, he won’t be under any obligation to support you financially.
Personally, I think you’d be more sensible doing yore degree, getting a job and than starting a family. But if having the baby is none negotiable, you need to be seriously considering and discussing with your bf, his parents and your parents how you will make this work, financially and practically.