I had a breakthrough infection back at the end of February. The timeline for me was like this:
February 23/24- I felt like I was coming down with a cold. So I took a sick day on the 24th, which was a Friday. I felt well enough to go back to work on Monday, although for most of the day I had a runny nose. Coincidentally, I read in a Covid patient's medical record that he too had a runny nose and that's what made me get tested on Tuesday, the 27th. This was the third Covid test that I ever took and this time I knew something was different when my nose reacted differently to the cotton swab. I got the call the next morning that I tested positive and had to stay home for the rest of the week.
Even though I had mild symptoms(I felt like I did when I normally had a cold), they were annoying and I made an appointment to receive the Monoclonal antibody treatment on the Monday that I was scheduled to go back to work. Mainly because of the chest discomfort. But since I spent most of my time in quarantine doing my usual biweekly house cleaning, I didn't go through with the treatment and I decided that I felt well enough to return to work. By the end of that week, I would say that I was pretty much back to my old self. Although for awhile there, I had blood in my mucous. But as someone who has sinus problems, I'm pretty much use to that.
So now since I apparently have super immunity, I haven't decided yet if I'm going to get a booster shot if they're made available. I'm waiting to see what the final decision is going to be on whether most of the population needs one. But if I have to get one, I'm going with Moderna this time.