Hello madam and welcome to HCM...
Thank you for posting your query.
I read your question completely and have understood it well.
Well, you say that you are sure that the semen did not enter you.
If that is the case, I can tell with certainty that you need not worry about getting pregnant.
Definitely, there are failure rates in the practice of withdrawal method. Most often it is due to non compliance.
But once you are sure that, the ejaculate did not enter inside of you, then there's absolutely no need to worry.
You will get your cycles as per your period cycle..
And, don't unnecessarily worry about this.
It happens, when practicing withdrawal method.
But I suggest you to go for barrier, condom method in future where we can be doubly convinced.
Coming to that
stomach Cramps and sore legs. As you told, it's because of work out or some other issue but not related to this query of yours. So chill, it will get better.
Hope this helps you.. In case you need any help with this, please let me know..
Take care and God bless.