Hi I was on anitbiocts October 3-5 I got my period on time the 7-11 I ended early and had sex the 12-14 I am suppose to get my period this month the 11-17 I have had very LIGHT spoting (I wouldn't even really call it spoting that's how light) and normally I have heavy flow. I took two at home tests they both came up negative do you think I'm pregnant?