Dream About White Horse And Sadness

Last night I had a dream that I had a white horse that had to be put to sleep. The man came and put the horse down, I sat with the horse afterwards, I felt sadness but didn't cry. I made the decision to try close the wound where the horse had been shot. I woke up feeling really fearful. I couldn't sleep afterwards, brain kept going back to looking at the bullet wound trying to fix it. I didn't understand the meaning of this dream as I don't have a white horse however they is a white horse on the back field where I live and one at the place I keep my horses at. I have been having alot of chest pains recently which I need to get checked out and at same time my mum has been diagnosed with angina so my head is all over the place, I feel no enjoyment in anything I'm doing, everything feels stressful and I keep worrying about what if I die, what will happen to my kids.