Feel so weak and ill

Kim
Hi all, looking for some advice (or a pep talk)... Am 36, 7wks 3days pregnant with 2nd child, my daughter is nearly 16 so has been a long time since I was last pregnant. I knew I was pregnant this time almost immediately as we were ttc, but just felt awful ever since! I have no energy, feel weak, dizzy, always like I'm about to faint, had diarrhoea every day for weeks, no appetite despite no nausea. Feel totally crap! It's starting to make me feel down which isn't good considering I'm trying to wean off my antidepressants that I've been on for years, also suffer bad anxiety that is creeping in too. This was a planned and wanted pregnancy but with the way I'm feeling I'm starting to worry I'm not going to cope because I'm never going to feel better...