Hello I am 18 years old and i have been off the pill sense the start of March. Me and my boyfriend have been have sex a lot the past three months. Last month, September, I was 10 days late ( Suppose to start on the 18th didn't start till the 28th). I was already 3 or 4 days late when I started stressing (because that is when i found out about the test) about if i was going to pass my breathing test i had to take when i went to the doctor, ( to see if i could join the military). I stressed myself so bad that i woke up the next day after the test with a migraine and later i found out i passed it. The next day i started my period but it was really light, so light we ended up having sex that day. I normally get really bad cramps if i do anything on my period but i didn't have any at all! The 2ed day it was just a little heavier. The 3rd day was the same as the 2ed. the fourth day it was like the 1st day and we did stuff again (still not cramps afterwards) and i woke up on the 5th day about 630 and there was nothing there. So my period last 4 days last month and was VERY LIGHT compared to the normal 6 to 7 days and having to change my tampon and pantie liner every 3 hours and having cramps. I went through 4 tampons one for each day and on the first and last day it hurt to take it out because there wasn't much on it. This month, October, I have been tired and been getting sick. I was suppose to start on the 25th but i didn't. For the past week i have had cramps but they only last for 30 to 60 seconds, clear/white discharge off and on that has no smell, it doesn't hurt when i pee so i know i don't have an infection, and my boobs are really sore at the nipples. I took a test ( First Signal Walmart Brand 88cent ) today, October 31, and it came out negative. I am not stressed about it i just want to know it i am. Do you think i could be? Was it to early to test? Why have i been late the past two months? Why was it so short in September? Someone please tell me something.