I just started taking LO/OVRAL 28 about a month ago (I have 4 more 'reminder' pills left in my first pack) and I was wondering if it is ok to start taking a daily vitamin like One A Day Energy because i've heard that taking vitamins can cause the birth control to be less effective.

I was also wondering how long I should wait to have sex after starting the pills and how effective they are. - should I use a condom everytime I have sex? I know you should anyway because of STD's but just as far as pregnancy is concerned would i need to everytime?

And lastly, I've felt kind of sick and sometimes a little dizzy if i haven't eaten for a little while (like between lunch and dinner) and haven't had much of an appitite. It hasn't been constant, just 3 or 4 times in the past two weeks - should i be worried about that??