I gave birth just over 2 weeks ago. It's now been 8 weeks since I had my 1st Pfizer jab so due the 2nd. I'm thinking about going to a walk in centre this week but I'm a little nervous about any side effects in this post natal time. I didn't have any side effects first time round apart from a sore arm. I think I'm just nervous about it making the first period even worse, when it comes. Any experiences?