Pregnancy and exercise help please

Hello have been ttc for a few months now but this month I feel " different " my boobs are sore I feel like there's a cramping almost like period pains the last few days  ... But it's too soon to tell ( wish they would invent a test that could tell sooner ) and am wondering where this leaves me with exercise .... I usually do circuit training and lifting weights with intervals of cardio such as battle ropes mountain climbers etc  , but because I only " suspect " I'm pregnant do you think I should just carry on as normal ? Any help or advice would be much appreciated thank you in advance :) xx