Slim chance, but I would like opinions!

This is kind of long, so I apologize. I did not get a period in March, April or May. I was on BC but I never remember to take out so I stopped in May. I got an ultrasound everything was normal. I got a period last few days in May and into June. I then got a period the 3rd week in June and then for 1 day in July. Today I went to the bathroom, wiped and this came out. I wiped again and it was clear semi watery, neither smelled at all. Should I be looking into testing myself since my SO and I are VERY sexually active, we have intercourse every day and a lot of times more than once. I'm not on BC and we do not use protection. I'm supposed to ovulate tomorrow, but since I had that 1 day period I'm super confused and am looking for any input possible!

I am asking if I may be because I know CM is a good idea of seeing when you are ovulating and signs/stages of pregnancy and I'm very new to tracking anything!