At the end of my tether!

Annemarie • I'm 31 years young.. i live in west bromwich uk.. i have crohn's disease 😟 so hope this works 😊
OK ladies I need some advice. So I'm I regular and most of the time my cycles range from 25 days to 28.. had a few where I've been 38 days. Glow has based my period to be on day 29 it's now day 32 and still no AF as I said not really unusual as it has been known. . However this cycle has been very different. Instead of just having the usual mild cramps nd sore nipples if also had fr the first time white lotion like CM, heart burn, a cold, lower back pain and smell and taste is a little off and also eaxtreamly tiered.. I have done a few HPT'S some I swore was a faint positive but no one else could see it so I guess it was just me. So I brought these digital tests that has a cartridge that you connect to the reader . The first one I did said error but had 2 lines second one said error and had no lines. I have read that all digital tests have q lines to show the test has worked. Well if it's worked then why the error message? I did not take the test apart the cartridge ejects out of the reader.. still no sign of AF cramps have stopped but still have sore nipples.. Anyone had this and got the BFP they been waiting for? Am I out? Please please help. Sorry it's a long post and thanks in advance