Why do I feel like this?

For the past week iv been having reallyy bad stomach achs, I feel extremely bloated!! I find myself really emotional, crying all the timee. Im so tiredd and just my body is exausted. My head is starting to hurt. I got over my period like 3 days ago. But I had unprotected 3 days before my period and he d in me more than once. Why do I feel likee thiss?! I feel extremely over welmed.