Day one of the cycle is day one of the pregnancy even though the bleeding cycle just started. The uterus is currently shedding the lining built up from the last cycle. The ovaries are preparing for ovulation; the hormones are kicking in for the new cycle. The hormone estrogen is starting to rise, as well as the follicle-stimulating hormone, which will start to prompt the ovaries to preparing an egg (s) for release during ovulation. Progesterone plummets during this time, since the lining sheds. The uterus is clearing out last month’s failed attempt at pregnancy.
This is a good time to consider getting pregnant, while the body is shedding the lining from last cycle. At this point, you want to develop good habits that will be vital throughout the pregnancy. Start taking a prenatal vitamin and make sure it has at least .4 mg of folic acid. This little nutrient will help to prevent neural tube defects during early pregnancy. Stop taking all medications. If you are on prescription medications, make an appointment and let your doctor know you are trying to get pregnant. They may decide to take you off the meds, or change to something safer for pregnancy.
This is a good time for dad to start practicing good habits too. Stop smoking, drinking alcohol, and wear loose underpants. Tight underwear binds the testicles and can affect sperm production. Keeping the testicles cool helps them to produce healthy sperm. This means staying away from Jacuzzis and hot tubs.
Stop all birth control; you want to give your body the best chances at a successful conception. Eat right and drink plenty of water. If you already exercise regularly, continue in moderation. The beginning of pregnancy is not the time to take on a new workout routine. If you exercise regularly, ask your doctor if it is okay to continue.