Firstly control your bleeding frequency and then calculate your ovulation period Lactation itself is a contraceptive... So by using those medication, you may not conceive ... Not good to take more medicines while lactation

Periods will be irregular during period of breast feeding. But if the flow is very heavy, consult your gynaecologist before issuing any medication. Do not start taking any medications without consulting a gynaecologist first.

Yes its fine. Tab Carazettee is a contraceptive given as you have your periods regularly. Ideally during lactation their is no period bleeding and hence less chances of pregnancy.

According to your statement you had given birth to the baby in the month of February under cesarean section. It is hardly 4 months from the day of cesarean till today and having regular periods and do not neglect this issue try to consult your doctor and explain your situation and try to go through the ultrasound abdomen and go to the clinical examination I'll try to get the treatment and do not take any medicines because you are giving the breastfeeding.

Periods will be irregular while you are breastfeeding. You can take the tablet as a contraceptive if you want