33w4d & wondering...

Hello, first let me say I'm 33w4d. I've had a great pregnancy with little to no pain up until this week. My boy has been head down the entire time and has been healthy as can be. I've just got to the part where I feel like I need to hold the bottom of my belly to keep him from falling out when I walk. Lol

I started feeling "period crampy" as I've been calling it probably at 33 weeks. I was worried something was wrong but my Dr reassured me at my appointment Tuesday that everything was fine & if I wanted him to check my cervix he would. He told me that 36 weekers get to go home with mommy so that kind of eased my mind.

I came home and walked with my in laws and felt normal. Then the next day I started feeling the "period cramps" again. They where irregular through the day and I didn't notice my belly becoming hard or tight. Then in the middle of the night I woke up with mild cramping accompanied by terrible back ache. I didn't time them, because I felt like they where irregular, like one right after the other and then more than 20 minutes apart.

Today I've only had one episode like what I mentioned. People have said they get diarrhea, but I haven't got exactly diarrhea. I have horrible gas and have been pooping normal, but frequent. I have had some indigestion, which I haven't experienced all pregnancy.

Do you think this is the beginning of the process or what? Thanks in advance and sorry for the long post.