"Plus even if they're not trans, magic does all kinds of things, some of them very inconvenient!"

"--Sorry, are you talking about the thing where awakening forcibly transitions people, or something else."

"For all I know there's a complication that causes people to have, I don't know, viable pollen! Like, there probably isn't because I made that up, but not having read even a description of all the species let alone all the other variations..."

"...Viable pollen. Okay, yeah, that--probably doesn't exist--but I for one am going to go get contracepted right now. Because yikes."

"Well, if you're going I guess I might as well too." In they go.

The dryad behind the desk is happy to assure them all that viable pollen is absolutely not a thing, but also temporary potions or hexes to acquire a dick recreationally are absolutely a thing, and taking precautions sooner rather than later is very responsible of them. 

"We're very responsible," agrees May, taking her free charm. How does one install/wear/deploy this.

Most of the charms are on little pendants to wear as necklaces but there are also bracelet and sticker versions. There is a sign saying that piercing and finger-ring versions are available at a low price. 

Any of them jazzy enough to charge off? If they're not she'll take the necklace.

A few of the friendship bracelet ones give a very mild charge!

It's better than nothing, if she's going to wear it around indefinitely. Friendship bracelet it is.

Emily snags a bracelet one too because it hides under her sleeve relatively well. 

"I will definitely make you something better than that to put it on."

"Thank you. Though apparently whoever made this was at least a little bit invested."

Ava takes a sticker. "I'm not exactly going to sweat it off."

"Can you even get pregnant, given how dead you are?"

"I don't think so, but why chance it when we're here anyway and it's free?"

"I guess empusa had to get into your bloodline somehow."

"That's not my area of expertise," the dryad admits, "or I'd have more to say about it. But you could probably find something in the library."

"Onward!" says May, and she floats out of the health center to proceed through dorms and classroom buildings and the campus store and the mailroom and the faculty offices and the next garden and the next pool, seeking the library.

The library, it turns out, is the largest building on campus even from the outside, and there's some kind of spatial warping going on because it's bigger on the inside. 

There are so. Many. BOOKS!!!

"Ohhh... books..." sighs May, spinning in the air and then zipping up to the organizational system explanation on the wall. Dewey did not account for these subjects.

The library is organized into numbered wings by general topic area, and then into numbered sub-sections of those wings by specific topic; for example, that wing is for ranked magic and divided into various differently-sized rooms based on which ranked magic it is (in general, the rooms for academic-friendly subjects are bigger). 

That's quite reasonable but May is a warlock. She wants to find a book on Lucasta! Where's the deities at?

This room over here, Theology, Celestial Code, Lucasta. There aren't a lot of books about her but there are a few, plus a few more that mention her somewhere. 

May collects up all two of the books that are about her, and a more comprehensive encyclopedia of genuine bonafide deities and their witchy religious practices, and then floats back out to see if there's a limit to how many books she can take.