Need help! Tmi and stupid question probably lol... Me and my hubby had sex the day before my period…

Need help! Tmi and stupid question probably lol... Me and my hubby had sex the day before my period was due. I got my period but it lasted like 3 days at the most and was extremely light.. now It's a week later and I'm emotional as can be!! Which never happens to me and nothing is going on to get me this depressed.. Could I be pregnant?? I'm not sure..