asking for my SIL she is having cramps (has been since halloween) but she said its like a constant…

asking for my SIL she is having cramps (has been since halloween) but she said its like a constant pain it doesn't go away. and today she just had some spotting. She's 33 weeks pregnant and high risk, but she cpuld be 35 depending which due date they're going by. anyone else experience anything like this