<human>: Give me the gist of the text in a nutshell

Hey runnit, I ran my first marathon on Sunday (27F, 4:07 time) and felt generally great afterward. 

During marathon training I was anywhere from 20-35 mpw and before marathon training I ran about 15-20 mpw. I also do a bootcamp-style workout to cross train. I took the first day after the marathon off, only walking the dog. I felt great though. Usually it kind of hurts to go down my stairs after a long run, but it wasn't bad after Monday. 

Tuesday, I swam laps because I was getting ansy about working out. And Wednesday, I swam laps and did a little bit of pool running. I also ran with my husband on his daily mile (he is on 320-ish in a row). 

So, when can I start running again? Runner's World online says there is a post-marathon slump, but the marathon actually energized me and got me excited to run more. I also want to maintain the high-ish mileage I had during training.

Also, a little about me: I have lost about 30lbs in the last year, but have been a runner about 5 years. In that time I have done tons of 5ks, 10ks, 15ks, and 2 half-marys this year. 3 years ago, a PT told me I couldn't be a lifelong runner bc of a hip problem I had, but I think he really just meant that at that weight, I couldn't be a lifelong runner. Crosstraining and weight loss have certainly helped me become a better/stronger/faster runner.
<bot>: Ran my first marathon faster than expected, feel great and want to run again. Worried about overdoing it and don't want to set myself up for injury.