help! paranoid

Okay so I did get my period in the month of November as expected (I'm on birth control) should I be worried at all? Because I swear I feel so bloated. But then again I've worked horrible hours at work between 2 jobs and I'm constantly on my feet! My posture is horrible right now, my back hurts, everything. I haven't experienced any pregnancy symptoms at all. Is there even a chance?! Im just overly paranoid maybe? I have been eating a lot of snacks considering I barely get breaks at work sometimes or I don't have time to eat full course meals. Any help?! Please?! I'm supposed to get my period this week. I'm on my sugar pills right now. Should I be worried at all? Thanks!!!