Hi there. Well, if you are on the pill and take it correctly, doubtful that you are pregnant. That is a pretty safe method of birth control. You say you have meds that might interfere with it working? You'd likely have spotting and such as it would put the hormones out of whack.
anyway, it is too early to test. They do make an Early Response Pregnancy Test--- you can test 4 days before your period is due (do it first thing in the morning). So in a few days you could take that. But I'd wait until your period is due and see if it shows up. It most likely will.
Pregnancy symptoms happen due to the build up of hormones in one's system created BY the pregnancy. It takes a while for them to build up for you to feel any symptoms. Tired is one that you hear of early on. But things like morning sickness typically doesn't kick in until women are at 6 to 7 weeks on average.
You could just be getting ready for your period as those are also symptoms of pms.
Anyway, in 8 days, test if you still worry about pregnancy. good luck
if you're taking birth control then no I wouldn't think you would be pregnant. but you know your body. wait until you miss your period. then take the test.