Throbbing or pulsating by ovary

EM12-11-16

Ok I ask this question a few days ago I need help.

I'm 5 weeks pregnant and I'm have pulsating or throbbing pains the left side where it feel like my feel ovary sits. No it's not painful jus discomfort. From time to time it will switch to the right but it mainly on the left. I'm scared.

Any advice. No cramping or bleeding