Pregnancy does not always obey scientific equations and the issue of how long only arises most times when there seems to have been a delay.
It is however important to shout wolf wolf un-necessarily until it is really proven that there is a delay.
Medically, two forms of infertility are recognized; primary and secondary.
A couple is considered to be suffering from primary infertility if conception has not taken place after one whole year of unprotected sexual intercourse.
If you've been in the business for just two months and you are talking about a delay therefore, maybe you only need to relax.
Getting pregnant could result from just one act of sex..
..
and talking about protected sex, it is only sure when failure has not yet set in or how do you think those so-called "mistake" babies came about.
The reasons for delay in pregnancy are numerous.
It is only when the basics have been cared for that we can start asking how long? The man needs to undergo simple tests like an SFA (seminal fluid analysis).
The woman on the other hand might need an HSG.
These simple tests can rule out blockages.
With the way now clear; regular timed sex is a way of making things happen faster.
Medical science says "regularly" some concerned friends say 2-3 times a week! Another important factor is the issue of stress.
Research stress decreases the fertility of both the man and the woman.
The old saying "relax, and you will get pregnant" is not just a joke therefore.
It is a medical advice.
Relax!