What is going on with my body?

I finished my period on the 12th April. It wasn't my usually period light bleeding also dotting a lot of egg white cm mixed with blood. On the 18th April I started white the egg white cm with brown blood in it. It was just there when I wiped. it's been on and off for three days just when I wipe. It stopped yesterday but now when I wipe it egg white cm with pink in it. What is going on with my body. I put a post on about the brown egg white cm and someone said to do a test I have there is a really faint line but I don't no if it is a dodgy test. The first picture was on Tuesday. Second picture of today's cm and third and fourth pictures is the test I have done this morning. I have an appointment on the 3rd may.. anyone no what this could be it's worrying me a little any help will do please.......