Thanks for the D2D. This really depends on the reason why you had to do IVF in the first instance.
If IVF was done because you felt it was the fastest way to have a baby, or if you failed to conceive naturally even though no obvious cause was found, then the next pregnancy may be easier naturally, or with some basic medical help (e.g. Ultrasound scan to assist with tracking of egg growth and timing of ovulation).
If IVF was done because your fallopian tubes were blocked, or the was a significant problem with sperm count/quality, then you may have to consider IVF again the 2nd time round.