mujhe last period 22 January ko hue the and Aaj 25th February hai and mujhe abhi tak periods nahin hue hain mere periods irregular rehte Hain 30 to 35 days ke bich mein and last 3 days se mai bahut tired feel kar ri hu , vomiting sa feel ho ra hai kuch acha nhi lag ra......and pregnancy test bhi ghar pe kiya hai vo bhi negative aa ra.....mujhe kya karna chahiye pls guide