Feeling down and lost

Hi ladies idk what to do. I feel so sad, and I really don’t have any friends or family for support. I have 4 kids, my oldest who has ADHD, and my youngest two are very close in age and young. It’s such a struggle being their mom. I just feel I’m not cut out to be a mom. I feel alone and trapped. I also don’t feel like I romantically love my husband anymore. I care about him but I just don’t feel that spark. I’m not interested in sex or anything, it makes me so uncomfortable. I don’t know what to do. I keep thinking of going away on a vacation just by myself, just to be alone and get my thoughts in order, evaluate myself and get a breather. Do you think that’s something I should do? What would you do in this situation?