I have posted a few times but I’m still so confused and feel extremely alone. :(

I had a miscarriage on the 1st of February, the bleeding stopped on the 5th. I was 5 weeks. I completely lost all pregnancy symptoms within 2 days, but the on the 20th I’ve noticed my nipples are getting extremely dark brown, I have a lot of gas, with mix up between dirrahea and constipation, I’ve been nauseous, and having a lot of mood swings, I’ve lost my appetite, had 1 or 2 weird cravings, the smell of noodles is making me sick and the same with some other foods, I’m sore in the side of my boobs to my armpits and having cramps in my lower belly & back frequently.. I need some guidance on what could be going on? Whether it’s hormones, a new pregnancy, or preparing for a period? I’ve been getting a heap of wet and white discharge that was a little lumpy the other day.. I’m really confused/scared and have no support. :( please help