I don't think you're being dumb. (And I'd be totally willing to bet the rest of the gang hear doesn't think that either.)
My own experience is that this whole "asking for help" thing is complicated and hard. You weren't raised to think you deserved it or that it's ok to need it. Navigating the path to what's actually true is tough. Especially alone. So it's good that you're bringing it up here.
Although that just feels like I'm bothering her and being too demanding
I think what you're actually doing is giving her a chance to do her job. Part of that is communicating with you. She can't really do the best to coordinate things if she doesn't know what people are dealing with. And just asking her to clarify why the 6 weeks isn't a big deal. Or it doesn't seem like it should be. Simple question, shouldn't be a big deal to answer.
that involves making an appointment with the doctor and being "needy".
The doctor isn't going to know how much pain & difficulty you're having unless you give them the information. In a perfect world, I'd like to think they'd ask but..... Anyway, I'm not sure what your options are for contacting the doctor. Here, I could send an email, but if you need to make an appointment, so be it. How about an appointment (or other form of communication) where you explain the issues you're up against (Pain, how much, what it causes problems with, like work etc. Mobility, can't get to the store from the back of the parking lot, or whatever.) Then say something like "I was wondering if there are options to help navigate the next 6 weeks, like maybe more help with the pain and maybe a disability placard for the time being." I don't think that's you being needy, I think it's you giving them information they need if they're going to do a better job of helping you.
I want is to ask my boyfriend. But he hasn't offered.
I have no idea why he hasn't offered. One of my farrier clients recently told me that "mind reading is actually often a form of hypervigilence." So, rather than assuming he hasn't offered because he doesn't want to. You might consider taking the risk of asking. Maybe he's so used to you going overboard "not being needy" that it never occurred to him that you might need or want help. (Have you ever talked about this "being needy" business with him? Does he know it's kind of a thing with you?) It's totally fair to think about it. It's also totally fair to talk to him about it. I have no idea how he'll respond, but I think it's the kind of thing that's important to know, no matter what. I'd have some reservations about someone who wasn't willing to help a friend. (Looking back on it, I can see that I've gotten into some less than good relationships because I don't ask much of people so the people who tend to be self centered are the ones who see me as a promising potential partner. Not saying he's like that, because I don't know, but it's part of this whole "not wanting to be a bother" package.)