Yes this is always possible so it is safer to take a pregnancy test or go to your local doctor.
Both and at any time no matter what you are doing at that time..
Sure, they can if you get something in them but this is not a symptom of pregnancy by any means.
A pregnancy test
Malaria is not a symptom of pregnancy.
A urinary tract infection (also called a "water infection") can happen at any time, sometimes happens in early pregnancy but is not a sign of pregnancy. It might be a symptom of pregnancy but it might also be a symptom of a disease. Source: pinkycloud.com/the-earliest-signs-of-pregnancy
yes,ovulation can occur at any point in your cycle. Headaches are a common symptom of pregnancy. If you feel you may be pregnant you should take a home pregnancy test and/or see your doctor.
It can be, but it's not a main symptom
No, fever is a symptom of infection or dehydration.
Yes. After ovulation, Progesterone rises causing heartburn.
no
No
No