The first place to look for medical advice is your local doctor. I’m aware that some people may have moved house or they have never been registered with a doctor before, so i would advise that you go get yourself registered as soon as possible. Generally you can book an appointment as soon as you have registered, but if say there isn’t a doctors near you or you have a phobia about going then you can find some medical advice online. There are websites out there that offer a live doctor to answer questions that you may have, this does cost a small fee. Unfortunately they cannot prescribe medication but they can advise ways to treat things and if they think its serious then they will tell you to go to the hospital.