In September I believe I had sex when i ovulated. Then I was due for my period the first week of October, I had bleeding about a week before my period, it was brown and sometimes there was red. It lasted for about 4 days and when my period was due there was nothing. 8 days after it was due I started bleeding again but very light and lasted about 2 1/2 days. I have almost all the signs. If I am pregnant then I could be about 4 or 5 weeks. But this week I've had a big increase in cm. My boobs are always swollen now and I'm bloated to point where I can't really suck in. I had some cramps on and off this week not sure why. Yesterday I looked in the mirror and around my nipples are slightly darker than usual. If you don't think I'm pregnant please comment why you would that and what could be going on..