Thank you for your question.
The main thing that you need to understand here is that signs and symptoms of pregnancy
do not start so early.
I mean to say that feeling different about a period or feeling sick to the stomach does not mean that you are pregnant.
These symptoms can happen with numerous other conditions such as viral infections and even with hormonal
changes which are very common when a lady is near her periods or about to have her periods or has just had her periods.
The most accurate way for knowing if you are pregnant or not is the pregnancy test. You can have a pregnancy test seven days after you miss a period. It is at this time that the pregnancy test is at its most accurate.
So, the bottom line is that I think this is related to hormonal changes. For the stomach discomfort
you can take something like OTC omeprazole
20 mg once daily and if you are having nausea you can take something like OTC dramamine