Serious question!

So I start my first round of clomid last month. Af was due to start May 13th, I was 2 days late it started on the 15th. Well atleast I think it was af.. this is where Im confused. On the 15th I had light spotting, the 16th spotting, red blood one time, no flow, the 17th,spotting but this time it was very light pink gooey mucus type of stuff. That was only one time nothing more after that. Yesterday , nothing.. today one time I had pinkish/gooey stuff. So I'm thinking this whole time its af..so I started clomid on day 3. Should I have started clomid again? I took a pg test 2 days before "af" started - neg. This pic is from today.