Strange bloating and stomach pains, exhaustion?

So I've been having problems with bloating and stomach pains that seem to be related to something I've eaten that was bad. The problem is when I go to the toilet, I'm still bloated? Its lower abdominal bloating. I'm not worried about pregnancy since I don't have any symptoms besides a late period. I'm recovering from a bad UTI but lately all I've wanted to do is sleep and I've been moody and slightly hungrier but I think it's just PMS, my period is sometimes late due to polycistic ovaries. Does anyone know what might be wrong? and should I make an appointment? Also I''ve recently gone of my antidepressants so thats probably why I'm moody. Anyone know what might make my period come quicker so I can get out of this PMS hell?? Thanks