Straining to have a BM cause vaginal bleeding while pregnant ?

I’m 5 weeks pregnant and very constipated, last night I was straining to have a BM and when I wiped there was blood from my vagina, is this something that can happen? Currently waiting for the doctor to call me back. Kinda freaking out. Only had a very small amount of blood, at that time, and at a couple of bathroom breaks after, but none since this morning.

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