So my fiancee (f29) suddenly started getting period pains when her period came on yesterday. Neither of us are sure why after 15 years they just started but more to the point, what can I (m34) do to help her out?What do people like that helps them through pains either to relieve the physical pain or just to feel a bit less rubbish about it all mentally.Thanks in advance.

Edit: Thank you everyone, you're all awesome! Turns out it was just a one day thing, she is feeling much better today but we're going to keep an eye on it and I will be getting a hot water bottle ready for if it happens again. Just caught us both off guard after 15 years of non-painful periods.