Please help

This is my second pregnancy but it is nothing like my first. I'm 33 weeks pregnant and as of yesterday I've been getting some horrible pain. My fiance and I rearranged and organized our toddlers room to make room (I mostly just sat on the floor and went through clothes and hung things up.) for his baby brother and ever since I have been hurting so bad. I have constant pain in my pelvic area where I marked red. And then my underbelly where i marked black feels like a giant bruise and has a dull ache that wont go away. Last night I feel like I was getting some back contractions that lasted a couple hours. I drank a lot of water and went to bed for the night but haven't been able to shake the rest of the aches the following day. I see my OB on Friday for a routine check up so I'm not sure if I should just wait until then or call tomorrow morning about it