Is it normal to be this loose after second baby? 1 year pp and idk what to do I hate this feeling

After I gave birth to my first I went back to normal very fast. Sex with my husband get the same as it did before I had a baby. She was a small baby 6 pounds. Then after my second (8 and a half pounds) everything changed. I didn’t need stitches for either of them. But Sex feels different. Like he doesn’t fit the same. And It takes him longer to finish. It makes me feel terrible. Also if I bend over I literally queef. Even with like sweats or shorts on if I bend down to get something like on my hands and knees I literally will queef. I am so humiliated. I feel like this is not normal I feel so bad about myself. Is there a way to fix this? Do I need to go to the ob?