I had my period on oct 6 and it lasted 5 days12 days later I started spotting this has never
Happened to me bfore I had sex according to my ovulation calender on my most fertile day I lost some weight then I gained 4 pounds out of nowhere could I be pregnant took a pregnancy test while still spotting it was negative I feel pregnant this has never happened to me bfore sincerely very worried.

How old are you? What forms of birth control have you used? For how long have you used it?

A pregnancy test is usually not accurate if you are spotting. If you are pregnant it takes a while for the pregnancy hormone (hcg) to build up in your system.