I'm a horrible mom

So, the other night I had Brayden on the couch propped up on the boppy like usual when he started to get a little cranky. It was time for his bottle. So, I walked around the corner, put 3 scoops of formula in the pre-filled water bottle when I started to hear Brayden start to whimper. I walked around the corner to find him on the floor facing the opposite way he was laying on the couch. I freaked out and picked him up and checked him out. Mark hearing me freak out pulled up his pants and ran out of the bathroom. He checked out Brayden out to find that he was ok not even a red mark. Brayden only cried half-heartedly for like 2 min. and was over it. When he fell off the couch he was like 2 cm away from banging his head on a wooden chair next to the couch. He fell right in between the chair and couch. Praise the Lord! Well, that was at 7pm. So, thinking I learned my lesson that I can't just walk around the corner anymore & have to sit right next to me at all times when on the couch. Mark gathered that the 1st time Brayden fell he must have sat up, reached to get something that he wanted on the floor, and then toppled on to the ground. Well, at 10pm. Brayden was propped up on boppy again on the couch, my hand on him, I was giving him his meds and talking to him. I said to him, "I don't know where Daddy went (mark normally takes the meds for me to put it up), so I'll just set it down here." In the 2 sec. it took to lean over put the meds on the floor, I seen out of the corner of my eye...Brayden flipped over my hand, landed on his head, neck snapped back and he fell on his bottom. I completely freaked out! Mark came running around the corner again..but this time I have no clue where he was and his pants were fastened. :) I picked Brayden up again to comfort him and told Mark what happened. As I'm holding Brayden I put my hand over my eyes because I was soo ashamed and started balling my eyes out - this lasted for hours. Mark took him from me as I continued to cover my face and wail. Then our housemate, Jennifer Dick, took Brayden so Mark could comfort me. Unfortunately, it only helped a little bit. Then I remembered that my mom dropped my sister on her head, so I had to call my mom. I guess I needed to be comforted by someone who's been there. For the rest of the night before Brayden went to bed when he looked at me he started to cry. He only cried for like 10 min. after the 2nd tumble, which happened at 10pm. I felt like a horrible mother! Like seriously...I know that sometimes things like this just happens, but What mom has it happen in a 3 hr period? Well, the next morning when Brayden woke up he was all smiles at me and forgot the whole thing. I guess kids are more resiliant than we think..and Brayden does have a hard head. Everytime I think of it...I still feel horrible. Just the image of him falling is aweful!