Thanks for your query,
Chances of you having blocked Fallopian tube
is very less likely as you already have a child.
Most common ovarian cause of infertility
I recommend you to get your hormonal
Reduce weight if you are overweight
. BMI of 18-24 is ideal.
Have balanced food,
Since you already have a baby, Your chances of conception for second is really high.
So be positive and stress free.