I was wondering if someone could give me advice please?

Me and my partner are “having fun” (TTC) I was wondering how do I check my CM this will be the first time I check it and what am I looking for like the colour and the texture of it?

Also has anyone used OPK I never used them and wondering which is the best one to use and how many times do I need to use it?

Or shall I just keep having fun and not keep track of my CM and things?

This is our second pregnancy we are going for as the first pregnancy was not successful as we had a miscarriage and If I’m honest I’m actually scared to become pregnant again but I’m wanting to start my own family!