Firstly try to relax a bit. If you only took two caplets and only once then I really don't think you should worry too much.

I don't know of the side affects, but am thinking that if there are then they would occur after prolonged or continual use IYKWIM. ie several doses a day or over a number of days.

I'm sure your bub will be just fine but maybe talk to your Dr for some reassurance.