Pregnant and bleeding after sex

Hey everyone!! This is actually the first time me leaving a topic since I always manage to get the answers right here.

Well this is what concerns me, :? I am 13 weeks pregnant and I have not been sexually acitve with my partner for like the past month due to my hormones changing and I was very dry so we stop trying. so recently a couple of weeks ago I started getting sexual again the first time that we did it i was bleeding a little bit, Like it was light pinky discharge when I wipped myself, Now yesterday we had sex again and the last time was like 4 days ago and I didn't bleed then, Now since last night I had that again a little light blood sort of like pink. and i washed off and now this morning I felt something come down went to check on it and i had some pink discharge is this normal what should I do?

Thanks vivi!