I Have Been Saying That I Have Trouble With Low

I have been saying that I have trouble with low blood sugar. That is what has really put me on the ground plus my stomach will knot up like I might poop or vomit, from what I've been told I'm sweating profusely and really pale. It may take a while before I can stand with a snack and orange juice still light headed. There is no warning to onset I've loosely been monitoring blood sugar have done better about regularly eating snacks or meals. I'm very active on outside work was worse about no activity in winter. I've took into consideration the necessity of more water possibly stress. I have to keep working and usually the attacks are at work I put a lot of pressure on myself to perform at work I do at home too but I take more rest breaks. I have been diagnosed with severe depression and on psych meds plus back problems (carbuncle on the spine and disk deterioration) bad knees (left knee replaced right knee will be replaced in two weeks) so I use pain mediation. Problem is I don't want to pass out at work.