Period length is in normal range. For planning pregnancy there are 3 most important tests - are you ovulating ( releasing a mature egg), are your Fallopian Tubes open?
And
Husband's semen analysis.
Of the above mentioned reports, if all 3 are normal, then you can consider simpler ways of increasing your chances for pregnancy.
Your age is a worrisome factor, 35 years, I will also recommend
AMH blood test ( gives us an Idea about the reserve of eggs in your ovaries),
thyroid and
prolactin hormone Levels.
Simple methods of getting
pregnant can be tried for 6 months maximum. If no pregnancy in 6 months time then in depth evaluation is needed.