I'm on the birth control pill and had sex with no 2nd method after a week of being on my pill.. should I be worried…

Yes you should it takes a minute for the meds to actually get on your system, the doctors usually tell you to you a back up method for a certain amount of time

I just don't really know when to test because I don't have periods. I don't know if I was ovulating or not because I haven't had a period in about 2 months due to taking a medicine because of having a period for to long. but a couple days ago my stomach started hurting and I actually threw up this morning while brushing my teeth. not sure if it was just from brushing my teeth or not

and I actually took 3 dollar test yesterday and the very first one I took had a VERY VERY VERY faint faint line and then the other 2 were negative but it's also been 8 days

wait a while and then take another test

Yep what @alissanicole said what awhile at least 3 wks, just because you don't have a period does not mean you won't ovulate, so be careful, let us know, take a first response in 3 wks 😉

I took mine at 6 weeks during the evening and had a super faint line. I woke up in the morning and it was just as dark as the first! @mhdawn

first test faint, second test solid line.

Wait until 14 days. If you had sex at ovulation, a test would show at 14 days. Look up evap lines, that may be what you are seeing. The nausea could just be nerves. A woman only has a 25% chance of conceiving even when timing is right so try not to worry.