Help please

My cycles since my stillborn in august are anything from 29 too 34 days this month it was 34 days the longest yet so i changed my period days on glow as the month before my cycle was 29 days so now i changed them on glow my fertile days have changed but is this correct only if my cycle would be 34 days again. My fertile days dont start till friday but do you think i should start trying for baby now as my cycle could be shorter again this month so therefore i could be on my fertile days already...sorry too go on just hard too explain...i decided to not use opks this month im trying too not think and stress about it too much and just go with the flow and see what happens x