What is that on the toilet paper?

While going through all of my IVF cycles and pregnancies I constantly examined the toilet paper. Every time I went to bathroom I reviewed my wipe. Is that discharge? Is that blood? Or is just my suppositories? Why do they have to make the Prometrium capsules a peachy-pink color? Really? Perhaps orange or green would have been a less stressful color choice? I even remember running to the bathroom without having to pee just to check as I swore I felt something, something bad, coming out….