Idk whats going on

Hey Ladies I really need some advice its been a month since I didn't go for my second shot of depo which was due Oct21 my Husband and I had intercourse from the 15th to the 20th I left for Arizona the next day so u never went to get my shot... I started spotting a week later very light nothing when. I wiped but a lil on a panty liner and nothing til this day. I've been nauseated craving unusual things and cramps...my breast are fuller and a lil tender when pushed down..last night my legs was so itchy I developed a rash and welts out of no where it felt like I had chicken pox all over again..and now I'm noticing I'm catching asthma attacks more often than ever.at first I thought it was me coming off the depo but now idk I took multiple of tests some that look positive and negative...