Pregnant or Constipated?

about a week ago i had sex (my second time in a space of one year) - i did use a condom for safety reasons and i have been bloated every since.

i am currently experiencing pain in my lower abdomen just by my navel (it kind of moves around from the bottom of my navel to the top) and it hurts to walk when i lift my right leg. the pain gets worse and then it completely goes away. it usually hurts to sit up, cough or laugh. the pain actually started last night but i ignored it and went to sleep thinking it will hopefully be gone in the morning but it still here. i tried to poop this morning and literally nothing.

my main question here is could i be pregnant or is it just something else?

please help