I have to ask...
I have been on birth control for about six years now (tricyclen lo) and my since my body has gotten used to it, my period has generally come and go like clockwork (with the exception of the odd day here and there.. )
Throughout the last month I've been on antibiotics, so as an extra precaution, we use condoms. None broke, slipped, or anything. The last time I had sex was about a month ago, we used a condom, and everything went well.
I got my period as usual (a little darker than normal) but it only lasted for a full two days, other than that, it just hasn't been very much, which freaks me out.
Is there any chance I could be pregnant? Should I just take an at home test?

Thanks SO much!

Always a chance, even with birth control, but the odds are in your favor that you are not pregnant. Periods can be a bit usual at times for no apparent reason. If it would ease your mind, try a test. Otherwise, see what happens next month.
It was wise of you to use extra precautions while on antibiotics... never hurts to make sure you have things covered (no pun intended!)