Advice please

I am just after a bit of advice as a woman in my 30s trying to conceive baby number 2. It has almost been two years now of TTC. Baby number one I conceived within six months. Has anyone had any troubles trying to conceive a second time?

Also regarding cm, at the time when you have ewcm does this mean ovulation is coming up or has happened?

Thanks in advance any advice would be welcome anything I can do to increase my chances of becoming pregnant.