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Please help-cervix high and tightly closed? - cervix high closed and stiff

My husband and I have been TTC for some time, and today I am on my period, I noticed these days that it is started, and my cervix is tightly closed, it could mean that you are pregnant? I did a test first response yesterday and neg-could still be pregnant? In the vicinity of the chain is a great thing happens right before your time too? Thank you for your help, good luck!