Am I stressed?...

Amy • TTC for a year, heart break of going through miscarriage and were still trying our best!
So for the last few weeks I've been feel nausea, back ache, sore breast and I always get sick I work nights and from 1am onwards I just feel like throwing up, I've got cravings for some random ass things and I took a test but it was negative... I had some discharge a few days ago, my period isn't due till 6th March. Need advice. I'm not on any birth control and me and my partner use condoms sometimes, the last two times we didn't but he put one on to finish off. Also have a very bloated stomach and peeing a hell of a lot and very constipated, I'm due to move this Saturday to live with my partner and I'm going to a new job new part of the country and I'm wondering if this is stress and this is coursing it I just would like some thoughts from you lovely ladiess