My last period was on the first week of December or last week of November. And until now I didnt get my period. I already took a HPT 4 times, the results were negative. I had unprotected sex but he didnt really cum inside me.. Im just afraid of the pre-cum and everything. I usually have a big belly but Im really scared right now. Did not experience any nausea or vomiting.. but sometimes I urinate a lot especially at night but I also drink a lot of water during night time. Please any advice ?