Spotting at 6 weeks

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Is it normal to have a bit of spotting around 6 weeks? This is the first time I’ve had any spotting and it was just when I wiped after going to the bathroom. It was light red with no clots. This is an <a href="https://glowing.com/glow-fertility-program">IVF</a> pregnancy and I don’t go for my first ultrasound until the 13th. Should I contact my doctor? I put a panty liner on so that I can monitor if there is anymore