Brown flaky stuff 5w2d


I'm 36 and found out last week I'm pregnant. As of today I am 5weeks and 2 days. I had my first hcg done thursday and it was 118. I had a second one done yesterday and it was 247. The doctor said it should have been around480. I go again tomorrow for more blood work. I'm worried because when I go to the bathroom I see some brown flaky stuff in the toilet and when I wipe I have brown discharge. Not having any pain or red discharge. Has any one experienced this before? I'm worried i might be miscarrying. This is my first pregnancy by the way. Any comments would help! Thanks