I know that when I was pregnant with DD2 at one point I felt somewhat similar. I had a 'I can't handle been needing so much by everyone'. DH needed me, DD1 needed me, my baby was draining me with returning MS, work was busy. For me it was only a once off. If your having troubles speak to someone. Get your bloods checked. Having an inbalance could be making things worse. My iron levels would always drop really low and that made a difference to my emotions too.