Thanks for writing to us.
The symptoms you have are likely to be related to a hormonal
disturbance. Since you had your periods only 3 weeks ago, right now it is too early to go for a pregnancy
test. It is best to wait for your periods to start spontaneously.
I hope this information has been both informative and helpful for you. You can consult me again directly through my profile URL http://bit.ly/Dr-Rakhi-Tayal