MD - Obstetrtics & Gynaecology, FCPS, DGO, Diploma of the Faculty of Family Planning (DFFP)
It is common not to get period or scanty period or delayed periods when breast feeding is going on. So during this time it is important to use reliable family planning method so that either you are not worried about pregnancy now and then or don’t miss diagnosing pregnancy early.
To rule out possibility of pregnancy do urine pregnancy test, then meet Gynecologist.
There are many temporary family planning methods like oral pills, injectable hormones, Intra uterine devices, condoms, diaphragms, safe period, coitus interruptus etc. You must know about success and failure rates of all as well as advantages and dis-advantages of all to decide which suits you the best. May be consult Gynecologist as a couple.