My cycles are usually 32–33 days, and my current period is delayed by 3 days. Making my next period likely around Nov 1–4. I’ll be travelling from Oct 29–Nov 13, and my first 3–4 days are very painful + heavy flow. Is there a safe way to bring my October period forward to around Oct 25? I’d prefer not to use any medicines to delay it, as it makes my cramps worse when the period eventually comes.