What should I do?

Me and my fiancé ttc about a month ago.. I got my period about a week after that, it didn't feel like a normal period. Was not as crampy as usual. I feel like I didn't bleed as long either. Now, im not ovulating. Which I should be. Should I test? I talked to my grandmother (she was a midwife) and she said it could be a possibility that I am pregnant. 
I've got sore boobs also, but it's not extremely bad to the point to where I cannot wear a bra. 

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