*attached photo of cycle chart*

On sept 1-2 I was lightly bleeding. I have had nausea to the point I cant eat at all for a full 7 days now. I decided to take an OPK because I had one laying around and I've heard that *sometimes* it can tell if you are pregnant and it obviously isn't positive OPK, but I have never gotten ANY kind of line before at least cycle day 16- 18.

Could this be a pregnancy? We were very active BD during my peak OVU in August.