Idk if work is worth it (work vent)

I am at that point in my job where I don't know if the fact I love what I do (i love my patients and the providers) isenough to stay and deal with the drama when I come back from leave....we see alot of nasty infected wounds and before I got pregnant it didn't bother me now if they smell I get sick. I almost threw up on my doc one day. Well I made a joke about it today because the 2 wounds we saw were fine and didnr smell and I got told by the only other girl working (mind you we normally have 4 girls in the back on Friday) I need to stop using this pregnancy as an excuse...and to stop being lazy....I was running my doc and other because one of the other girls was out. We close at 430 I left at 555. I get left by myself at least once a week to pick up the slack of 2 other girls. I am overwhelmed with my job I literally just come home and am angry at 2 of my coworkers 99% of the time. My manager doesn't seem to think there is anything wrong with what they do, these girls can literally do whatever they want and no consequences would be inforced. Idk what to do anymore. Like I said I absolutely love my patients and my provider and the other docs but idk if it's worth being so overwhelmed. I can't wait for my leave just to see that place fall under pressure from me being gone while trying to help the girl covering me. I do more than this girl realizes. I don't take an actual lunch at least 2 times a week. I eat at my desk and still work. I stay late to catch up.