Help!

I've been trying all summer to have an orgasm. The shower gives me a lot of pleasure and rubbing my clit doesn't always work for me. (I think I have a smaller clit and thats the reason I sometimes I can't find it?) I know you shouldn't focus on having an orgasm and I do my best. I can relax but sometimes I get tense and need to stop and take a break because the pleasure is too much.

What can I do to cum for the first time? Should I try and electric toothbrush or back massager?