Definitely bloating. Im 8 weeks now and around that time is when the awful bloating stayed for me. It seems to get worse as the day goes on.
Your baby is like the size of a sesame seed right now... It's probably just bloating..my stomach was Rock hard around that time but it went away its because I was so bloated
My first pregnancy I weighted 119 before and gained 7lbs in 8wks and u could tell I was preggers. The skinner u r the faster u show.