Hip/ pelvic pain

So I have terrible hip and pelvic pain all the time but especially around my period and my osteopath suggested a si support belt to help me feel more secure. Has anyone tried this? As someone a little over weight has anyone tried the maternity ones as I feel like it would also help the terrible stomach muscle pain from the intense cramps I get… waiting on a gynecology appointment so it’s not intended long term just something to get me through as having this plus pcos plus hypermobility and chronic pain is just shit.