Who else is first time pregnant and only a few weeks?

Are you getting spotting too of a yellowy light brown too? Is this anything to worry about. I have read on here you can experience this in the first trimester but it's scary because never expected to get pregnant this soon. I have taken four tests now since finding out last Wednesday and also had all the symptoms you get with being pregnant too but there's still some doubt in my mind until a doctor tells me in over a weeks time that I am, that am I actually? Because the week/ 2wks before finding out . I was put on stomach capsules and has that just mucked my body up?!