White discharge no period. For this.

I had my period from January 11th to 16th. I had unprotected sex for the first time while trying to conceive on January 19th, 21st, 23rd, and 25th. My periods were normal in January, with no unusual spotting. My last period was from February 7th to 13th. After that, I started experiencing brown spotting, which I had never had before. I had unprotected sex again on February 18th and 20th. From February 21st onward, I experienced light bleeding—not heavy, but it increased with travel and reduced with rest. This bleeding was for 2 days but painless. This is my first experience with unprotected sex, and I have never had these symptoms before. My periods have always been regular. Now, today is Day 28. Since the night of Day 27, I have been experiencing a large amount of clear, stretchy discharge frequently, along with mild leg pain. Please let me know the possible reasons for this.