Bleeding but maybe still PG¿

Catherine • Hello my name is Catherine and I`m so thankful to see and share my experiences with you. Baby Dust to all!
I had what I thought was implantation bleeding and I got a pink dot on a frer on the test line.....weird I know but then a day later I got what I think is my period it's semi heavy but my nipples are SO sensitive and I am so nauseous and I have a strange metal taste in my mouth and I don't know what to think! Has anyone had what they thought was their period but ended up preggers???? Please give me some advice