some input?

so earlier last week i started getting crazy weird vivid dreams, i had no appetite, cigarettes were making me a little sick and i was always exhausted and thougjt i had a cold coming om but it was just congestion . well tues i got light light pink bleeding and into yesterday it got heavier but only once did it get "heavy" (used 1 tampon), then by tonight, NOTHING! usually my periods are about 5 days and EXTREMELY heavy and this was only about 1.5 not even and lighter than ive ever had. and i noticed my nipples have gotten larger and the veins VERY prominent and i have been an emotional wreck today along with no appetite and feeling just off. is it possible this was implantation bleeding? ive read that its supposed to be light but if its only "heavy" one day or not as long as your normal period or as heavy as your normal period, it can be IB. but i also just need some input and when to test? (also period isnt due till next tues)