Unsure if pregnant or just late

I'm in cycle day 38, too scared to take a pregnancy test as I had a chemical pregnancy in February. This is the 6th time I've been over 35 days in 2 years. I've had no pregnancy symptoms that I know of but this is what I've had. Positive opk on cycle day 17, within the last week I've been really tired, constipated, creamy white CM but not heaps, cramps, tingling nipples but not sore, few dizzy spells, bloated.