Im itchy all over! Please help?

Earlier today I was in the garden pulling weeds and I started feeling itchy and I looks at my arms and legs and there were there tiny bugs crawling all over me! I told my mom and she told me that they were chiggers and so I ran inside and took a shower. I was fine and wasn't itchy anymore but when I got in bed I started feeling like something was crawling on me but nothing was there, I will itch the spot that itches and then it goes away but then another spot starts intching! Also I was looking at my arms and 4 new moles have came up and I have no idea when they got there or anything! Please help! Btw I have poison ivy my right leg and I haven't been itching it that much and I've been putting camomile lotion (I think thts how u spell it) and it hasn't been spreading though! Please help! I'm 12 years old and female