is it dangerous to check my cervix on my own ?

I am 7dpo and had a small amount of cm it looked like cream and it was strechy.. so i checked my cervix after i saw that and i had this thick string white strechy mucus.. i wanted to take a photo to post but did not have my phone with me... so when i went to check again i only had a small amount of creamy watery mucus.. i want to know could i hurt myself badly if i do check my cervix ? And im posting 3 photos wich looks like the mucus i had..

1. this is what it kinda looked like the 1st time i checked.

2. this is what it looked like the 3rd time.

this is what it looked like the last time i checked...