Why am i so constipated after getting first covid vaccine ? i got it on friday and havent pooped since friday and its monday . i drank prune lax?

I would be surprised if thus was a side effect from the vaccine. If you don't have any urge to have a BM work from above by taking a one time laxative recommended by your pharmacist. If you have the urge but can't move your bowels, work from below by inserting a dulcolax rectal suppository or by gently inserting a Fleets enema. Drink lots of fluids,eat fiber like fruits&veggies as well. See MD as