Down day today

So I'm currently 26 weeks pregnant and whilst I am extremely excited and can't wait to meet our boy I am feeling really down. I have come out in spots like a teenager, yet have eczema at the same time which means I can't even wear make up to make me feel better. I'm putting on weight which i know is to be expected but I feel huge. My nose has also widened. My bf is really supportive and constantly tells me I'm beautiful but it's definitely not what I see atm. I also have a craving for salt and vinegar crisps and sweets which I know doesn't help. Any tips for clearer skin and a more positive attitude?