You want to be like a pregnant lab rat? Hahah try naturally practice makes perfect

This post has been done loads recently, have a look around at some of the other posts.

You need a healthy balanced diet, try folic acid supplements, and have a good sex life.
Every other day is better because it allows your partner to build his sperm reserves back up.
Unless you have a far out cycle try having good sex every other day from like day 7/8 (day 1 being first day of period).
If you don't feel like sex on a particular day then don't do it.
The key is to not try too hard. Just enjoy the trying

Try fertility pills, but they increase your chances of multiple births.

Hmmmmmmmm, but you can't just pop into the local shop for a pack of fertility pills, not like a pack of aspirin or tylenol (depends where you are).
And if you get them without prescription - be very very cautious.
To get a prescription you need to have ben actively trying for sometime (it varies between countries, counties/states and doctors) and to go through tests proving that you need them.