<s>[INST] hi...i am 34 years old. i have 5 years old daughter,now i am thinking one more baby .but my period is ireguler ,45 or 50 day s after comes period ,so i can;t understand period cycle for pregnancy try.i want to know that what i will do for pregnacy?age 34, 5 4 height, 64 weight [/INST] Welcome to Chat Doctor Do you have any constipation or abdominal pain. You could be having irregular period because of possible hormonal disturbance. You should get examined by Gynecologist and hormones like thyroid, prolactin checked. Also, ultrasound may be needed to look for ovarian cysts.  Chat Doctor.  Do exercise every day. Avoid fatty, junk food. Eat plenty of fresh fruits and green leafy vegetables as overweight can be associated with certain types of hormone disturbance. Once the cause is treated and your periods become regular you may have better chance to conceive. </s>