What are some good tips for weight loss before ttc?

i have been ttc for a year and i have recently decided to lose some weight first.....i want to lose about 50 pounds before i concieve....i had a chemical pregnancy about 5 months ago and i just really want to make sure my health is on a good level first. i just started a very strict work out regimen as well as a healthier eating plan....this is very important to me because my dad has a ton of health issues....i just want to have a healthy body and a healthy family...plz help me...10 pointys to best answer!!! any tips are appreciated