I'm 18 And I Just Started Birth Control (orsythia) About

I'm 18 and I just started birth control (orsythia) about a week and a half ago and I'm having some dull to strong pains in my legs that come and go. I know that they could be blood clots but I don't know if I should go and get it checked out or not. I've also had some back and Arm pains and the occasional headache. I don't have much money so if I do need to get it checked out its possible that I would have to wait 5 days until I can get free care. I'm scared that it may be too long to wait to go to the doctors... I really just don't know what to do