Bad news from doctor

So im high risk and last week i went in for my last cervical check im 22 wks and 4 days so when we finish my cervical check they tell me by cervix went down to 2cm and i was 5cm two weeks ago so now I have to do another cervical check on Tuesday. It's just frustrating i get shots weekly(to keep him in longer). And take extra precaution with everything. Its frustrating that i cant trust or feel comfortable in my own body