I have unprotected sex about 2 months ago, then I took morning after pill within 5days, according to a doctor instruction. My period was late for 3 weeks on 14 Aug till16 Aug, normal bleeding and colour. However, these few days I feel kinda dizzy after I stand up from lying down and a little bit constipated. I used to poop everyday but now it takes me so hard to poop and just a little bit came out. Also, I feel like acid reflux. So, I'm wondering if that because of pregnancy?