Five months in TTC...

I am almost one hundred percent sure that my period is going to start today..my body is feeling it 😪. This will be month number 5 TTC and still no luck..it's such a surprising thing because I just never imagined I'd be one that struggled..it happened so easily for my family members. Regardless I know I am different and so is my body..what are some things you tried that helped you successfully TTC? I'm thinking about trying preseed next month? How long should I wait before going to my doctor about this?