I'm confused....

Yesterday I knew I had to run. The nice thing about the C25K program is, it is only 3 days a week but you don't want to go more than 2 days w/o running. Because week 2 day 1 seemed to be so difficult I took an extra day off between. I was concerned that I would find similar results yesterday.  Hubby was home so I was able to avoid the interruptions from the kiddos and the first 90 seconds came and I made it!! I didn't feel like my heart was going to explode. It was beating fast but I felt it was better than the other day. Long story short... I got through the whole 20 mins while it was not easy some things seemed to be missing.  2 years ago when I first did the C25K on Week 3 Day1 I comment on how I have never dripped sweat like that before.  I say how I did all my running at 4 MPH and that I was sweating and my legs hurt so bad.  Granted I am not at Week 3 Day 1 onlly Week 2 Day 2 however, my running I am doing at 5-5.2 MPH.  After my first week back my legs hurt and were tight and after my run but yesterday.......nothing.  I was sweaty but not dripping, What does this mean?  I am confused??

Then today my muscles aren't really sore either.  I would say they feel tired but not sore.  Are my muscles already ready to run for longer periods of time? I don't feel ready to run longer yet, but normally if your not sore you need to push more. I feel like my cardio is in much worse shape than my muscles are and so I don't want to push the speed or exertion too much. Where does this leave me? I need cross training.  Not like I've always said I would do and never did. I really need to do it this time.  My cardio is still not ready or in shape for more than what I am doing but apparently my muscles are. I messaged my favorite trainer than no longer trains and asked if she still has copies of our work outs together, she would always make me a copy and I can't find them anywhere. Fingers crossed she is able to get them to me. she was all about free weights and body weight exercises so I should be able to do most of them at home. I may have to purchase a dreaded bosu, I really hate that thing.