The Past Two Days I've Been Feeling Very Full ,

The past two days I've been feeling very full , my head hurts a lot, I'm very thirsty , my nipples are hurting , ive been feeling like i need to sleep alot and I've been going poop a lot. Do I have the flu ? Or could I be pregnant even though the last time my husband and I had sex was six days ago now we had sex every day for five days and I was on my period til the last day..
Any advice?