@MollyRover No, not just you that’s worrying - I have my booster booked for next week but I am anxious.
My previous two pre-pregnancy Pfizer jabs caused my normally “like clockwork” cycle to become completely wonky. I had terrible cramps and bled, scarily heavily, for weeks after each jab, despite the fact that my period had finished just days before. I’m genuinely surprised that I managed to fall pregnant as my cycles became completely non-sensical for months afterwards.
I’ve pored over academic articles and the risk of spontaneous miscarriage post-vaccine seems to reduce drastically at 14-15 weeks, so I’ve booked mine for then (but of course that’s the point at which non-vaccine related spontaneous miscarriage reduces significantly anyway). I’ve spoken to an immunologist who has reassured me that the risks are far, far outweighed by the benefits but given my own experience, I’m so anxious about doing something to compromise the pregnancy.