Implantation bleeding HELP!

Anyone know or experience implantation bleeding? That might be going on with my body right now and I just need to know what to do. I haven't experienced any cramping and my blood is VERY light & brown. I wouldn't have noticed it without wiping because it hasn't came out onto my underwear or anything. I've been nauseous for a while and feeling dizzy sometimes. Just need to know what's going on. Thanks.