Am I pregnant?

Nikki
Last month I had my period like normal. I had sex the day after my period ended and then 4 days after I had 3 days of spotting.... I've just had an overall weird feeling in my body since then and I have quite a few pregnancy symptoms (neausea, throwing up, sore breasts, bloating, fatigue) is it possible I could be pregnant? Also, I'm on the pill but I'm really bad about taking it on time.