There are several things you can do... start charting your basal temperatures... (you can buy a thermometer for this in the personal section at walmart for less than $20) when your temperature peaks it means Ovulation has occured and it will help you to know when the best time to conceive is. Your best chance is having sex within 48 hours before you ovulate and up to 12 hours after. You can also use Ovulation Predictors, which you can buy at the Dollar Tree / Dollar Stores for $1 a test... you'll want to start testing around day 10-12 and test for a week straight, so the cost per month should still be less than $10 and will pinpoint when you ovulate. If you have a 28 day cycle your O day is typically the 14th, though due to hormones and such, sometimes women will Ovulate either while still on their period or right before it, so you may just be missing your fertile days. There is also a tester you can use that you lick a slide and look at it thru a special lens and if you are fertile at that time there will be ferning, I have used this and found it to be very accurate! You can buy it in specialty stores, or off ebay. The brand I have is MaybeMom. Also, you can get pregnant in any position really, but researchers have found that the ones that are most conductive are missionary and doggie-style, and it also helps if you orgasm AFTER your husband does as the spasms & contractions will help pull the semen closer into your cervix where they need to be! :) And it never herts to put gravity on the little swimmers side by laying with a pillow under your hips with them tilted up for 15-20 minutes afterward.Good luck conceiving # 2!